The pH range over which an indicator color change occurs is referred to as its: w) titration range x) titration constant y) transition interval z) none of the above

The pH range over which an indicator color change occurs is referred to as its: w) titration range x) titration constant y) transition interval z) none of the above
by

1 Answer

Answer :

ANSWER: Y -- TRANSITION INTERVAL
by

Related questions

Why the titration of Na2CO3 and HCl solutions is not completed using Ph.Ph indicator?

Description : Why the titration of Na2CO3 and HCl solutions is not completed using Ph.Ph indicator?

Last Answer : Google

in titration of 25 mL of the solution containing Cu2+ with the concentration of 0.01 molar , with SCN – (0.01 Molar) , if we use the indicator that changed its color in PSCN= 9. Calculate the error of titration PKSP(CuSCN) =13.4?

Description : in titration of 25 mL of the solution containing Cu2+ with the concentration of 0.01 molar , with SCN – (0.01 Molar) , if we use the indicator that changed its color in PSCN= 9. Calculate the error of titration PKSP(CuSCN) =13.4?

Last Answer : just the color change from the indicator. Thus, a careful selection of the indicator will reduce the indicator error. For example, if the equivalence point is at a pH of 8.4, then the ... are in the range of aqueous pH changes are of little use. Instead, the titrant and indicator used

A process in which substances are separated throug differences in the rates at which the components migrate is called: w) filtration x) chromatography y) elution z) titration

Description : A process in which substances are separated throug differences in the rates at which the components migrate is called: w) filtration x) chromatography y) elution z) titration

Last Answer : ANSWER: X -- CHROMATOGRAPHY

When an indicator changes color during a titration it is a sign that .?

Description : When an indicator changes color during a titration it is a sign that .?

Last Answer : What is the answer ?

A cobalt chloride solution soaked into a piece of cotton can be used as an indicator for changes in humidity levels. Pink indicates a high-humidity environment and blue a low-humidity environment. What are these color changes caused by: w) The ionization and reduction of the cobalt plus two slash cobalt plus three couple. x) The vaporization and redeposition of cobalt chloride. y) The loss and readsorption of the cobalt's waters of hydration. z) This is an illustration of the Schrodinger principle.

Description : A cobalt chloride solution soaked into a piece of cotton can be used as an indicator for changes in humidity levels. Pink indicates a high-humidity environment and blue a low-humidity environment. What ... the cobalt's waters of hydration. z) This is an illustration of the Schrodinger principle.  

Last Answer : ANSWER: Y -- THE LOSS AND READSORPTION OF THE COBALT'S WATERS OF HYDRATION.

What range of frequencies are usually referred to as the Ultra High Frequency (UHF) Band? w) 3 to 30 Mega Hertz x) 30 to 300 Mega Hertz y) 300 to 3,000 Mega Hertz z) 30,000 to 300,000 Mega Hertz

Description : What range of frequencies are usually referred to as the Ultra High Frequency (UHF) Band? w) 3 to 30 Mega Hertz x) 30 to 300 Mega Hertz y) 300 to 3,000 Mega Hertz z) 30,000 to 300,000 Mega Hertz

Last Answer : ANSWER: Y -- 300 to 3,000 MEGA HERTZ

What range of frequencies are usually referred to as the UHF Band? w) 3 to 30 Megahertz x) 30 to 300 Megahertz y) 300 to 3,000 Megahertz z) 30,000 to 300,000 Megahertz

Description : What range of frequencies are usually referred to as the UHF Band? w) 3 to 30 Megahertz x) 30 to 300 Megahertz y) 300 to 3,000 Megahertz z) 30,000 to 300,000 Megahertz

Last Answer : ANSWER: Y -- 300 TO 3,000 MEGAHERTZ

What range of frequencies are usually referred to as audio frequencies for humans? w) 0 to 20 Hertz x) 20 to 20,000 Hertz y) 200 to 200,000 Hertz z) 10,000 to 30,000 Hertz

Description : What range of frequencies are usually referred to as audio frequencies for humans? w) 0 to 20 Hertz x) 20 to 20,000 Hertz y) 200 to 200,000 Hertz z) 10,000 to 30,000 Hertz

Last Answer : ANSWER: X -- 20 TO 20,000 HERTZ

Within a given period of the periodic table, the element with the lowest ionization energy is: w) transition metal x) alkali metal y) halogen z) noble gas

Description : Within a given period of the periodic table, the element with the lowest ionization energy is: w) transition metal x) alkali metal y) halogen z) noble gas

Last Answer : ANSWER: X -- ALKALI METAL

The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

Description : The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

Last Answer : ANSWER: Y -- ALKALINE EARTHS

Which line in figure 'A' shown in the illustration represents the interval that the pulse is 'ON'? EL-0088 A. W B. X C. Y D. Z

Description : Which line in figure 'A' shown in the illustration represents the interval that the pulse is 'ON'? EL-0088 A. W B. X C. Y D. Z

Last Answer : Answer: C

Which line of figure 'A' shown in the illustration represents the interval that the pulse is 'OFF'? EL-0088 A. W B. X C. Y D. Z

Description : Which line of figure 'A' shown in the illustration represents the interval that the pulse is 'OFF'? EL-0088 A. W B. X C. Y D. Z

Last Answer : Answer: D

PH is the negative logarithm of the hydrogen Ion Concentration express4ed in moles/liter of aqueous solution. PH of buffer solution is calculated by. Henderson’s equation Name the best indicator Phenolphthalein, PH range 8.3 to 10.0 Chemical kinetics deals with study of. Rates and mechanisms of chemical and Biochemical reactions

Description : PH is the negative logarithm of the hydrogen Ion Concentration express4ed in moles/liter of aqueous solution. PH of buffer solution is calculated by. Henderson's equation Name the best ... Chemical kinetics deals with study of. Rates and mechanisms of chemical and Biochemical reactions

Last Answer : What does Thermodynamics helps in predicting ?

Buffer solutions show which one of the following traits: w) absorb acid and base with only small changes in pH x) indefinite stability y) high elasticity z) abnormal density

Description : Buffer solutions show which one of the following traits: w) absorb acid and base with only small changes in pH x) indefinite stability y) high elasticity z) abnormal density

Last Answer : ANSWER: W -- ABSORB ACID AND BASE WITH ONLY SMALL CHANGES IN pH

A sample of grapefruit juice at 25 degrees Celsius has a hydronium concentration of 1.78 X 10-3 molar. What is the pH of the solution? w) 2.22 x) 2.75 y) 3.25 z) 6.33

Description : A sample of grapefruit juice at 25 degrees Celsius has a hydronium concentration of 1.78 X 10-3 molar. What is the pH of the solution? w) 2.22 x) 2.75 y) 3.25 z) 6.33

Last Answer : ANSWER: X -- 2.75

pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in the pH 8 solution. x) There are 1,000 times more hydrogen ions in the pH 5 solution. y) There are 3 times more hydrogen ions in the pH 8 solution. z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.

Description : pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in ... . z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.

Last Answer : ANSWER: X -- THERE ARE 1,000 TIMES MORE HYDROGEN IONS IN THE PH 5 SOLUTION

The pH of water will be decreased to below pH 7 by the hydrolysis of which of the following? w) sodium carbonate x) sodium chloride y) ammonium chloride z) potassium bromide

Description : The pH of water will be decreased to below pH 7 by the hydrolysis of which of the following? w) sodium carbonate x) sodium chloride y) ammonium chloride z) potassium bromide

Last Answer : ANSWER: C -- AMMONIUM CHLORIDE

What is the pH of an aqueous solution of 0.1 molar HCl? w) 7 x) 13 y) 1 z) 3

Description : What is the pH of an aqueous solution of 0.1 molar HCl? w) 7 x) 13 y) 1 z) 3

Last Answer : ANSWER: Y -- 1

A solution with a pH of 12 is: w) weakly acidic x) strongly acidic y) weakly basic z) strongly basic

Description : A solution with a pH of 12 is: w) weakly acidic x) strongly acidic y) weakly basic z) strongly basic

Last Answer : ANSWER: Z -- STRONGLY BASIC

If the pressure of a gas is increased by a factor of 4, and the temperature is kept constant, the volume of the gas will change by which of the following factors? w) 4 x) 2 y) 1/2 z) 1/4

Description : If the pressure of a gas is increased by a factor of 4, and the temperature is kept constant, the volume of the gas will change by which of the following factors? w) 4 x) 2 y) 1/2 z) 1/4

Last Answer : ANSWER: Z -- 1/4

If the volume of a gas changes by a factor of 3, with pressure remaining constant, the temperature in Kelvin will change by a factor of: w) 1/9 x) 1/3 y) 3 z) 9

Description : If the volume of a gas changes by a factor of 3, with pressure remaining constant, the temperature in Kelvin will change by a factor of: w) 1/9 x) 1/3 y) 3 z) 9

Last Answer : ANSWER: Y -- 3

Newton's first law is often referred to as which of the following? w) The law of straight-line motion. x) The law of momentum y) The law of inertia z) F = ma (Spell out M-A)

Description : Newton's first law is often referred to as which of the following? w) The law of straight-line motion. x) The law of momentum y) The law of inertia z) F = ma (Spell out M-A)

Last Answer : ANSWER: Y -- THE LAW OF INERTIA

Reactors in commercial nuclear power plants in the U.S. are often referred to as thermal reactors. A thermal reactor uses: w) fissionable plutonium-239 as fuel. x) a relatively low heat output. y) neutrons moderated to relatively low energies. z) liquid sodium as a coolant.

Description : Reactors in commercial nuclear power plants in the U.S. are often referred to as thermal reactors. A thermal reactor uses: w) fissionable plutonium-239 as fuel. x) a relatively low heat output. y) neutrons moderated to relatively low energies. z) liquid sodium as a coolant.

Last Answer : ANSWER: Y -- NEUTRONS MODERATED TO RELATIVELY LOW ENERGIES.

Close inspection of a failed metal part reveals artifacts on the fracture surface commonly referred to as "striations" or "beach marks". This indicates the component failed as a result of: w) Sudden overloading x) Cyclical loading y) Stress corrosion cracking z) None of the above

Description : Close inspection of a failed metal part reveals artifacts on the fracture surface commonly referred to as "striations" or "beach marks". This indicates the component failed as a result of: w) Sudden overloading x) Cyclical loading y) Stress corrosion cracking z) None of the above

Last Answer : ANSWER: X -- CYCLICAL LOADING

The inverse of wavelength is referred to as: w) wave number x) frequency y) velocity z) momentum

Description : The inverse of wavelength is referred to as: w) wave number x) frequency y) velocity z) momentum

Last Answer : ANSWER: W -- WAVE NUMBER

Which of the following is the element which makes up about 8 percent of the earth's crust and occurs in all rocks except limestone and sandstone? w) sulfur x) aluminum y) sodium z) magnesium

Description : Which of the following is the element which makes up about 8 percent of the earth's crust and occurs in all rocks except limestone and sandstone? w) sulfur x) aluminum y) sodium z) magnesium

Last Answer : ANSWER: X -- ALUMINUM

A negative heat of solution indicates that: w) an endothermic dissolving process occurs x) solute solubility increases with rising solution temperature y) solute solubility decreases with rising solution temperature z) super-saturation conditions exist

Description : A negative heat of solution indicates that: w) an endothermic dissolving process occurs x) solute solubility increases with rising solution temperature y) solute solubility decreases with rising solution temperature z) super-saturation conditions exist

Last Answer : ANSWER: Y -- SOLUTE SOLUBILITY DECREASES WITH RISING SOLUTION TEMPERATURE

The rate at which dissolution occurs is LEAST dependent upon which one of the following factors: w) temperature x) pressure y) solution concentration z) solute surface area

Description : The rate at which dissolution occurs is LEAST dependent upon which one of the following factors: w) temperature x) pressure y) solution concentration z) solute surface area

Last Answer : ANSWER: X -- PRESSURE

The region of the United States with the lowest pH values found in rainwater (acid rain) is: w) Mid West x) North West y) North East z) South East

Description : The region of the United States with the lowest pH values found in rainwater (acid rain) is: w) Mid West x) North West y) North East z) South East 

Last Answer : ANSWER: Y -- NORTH EAST 

In a flame test, the presence of copper in a solution is evident by what color flame? Is the flame w) red x) orange y) indigo z) blue-green

Description : In a flame test, the presence of copper in a solution is evident by what color flame? Is the flame w) red x) orange y) indigo z) blue-green

Last Answer : ANSWER: Z -- BLUE-GREEN

Which of the following is NOT a physical property of crystalline boron? w) brown color x) diamond hardness y) brittleness z) high electrical resistance

Description : Which of the following is NOT a physical property of crystalline boron? w) brown color x) diamond hardness y) brittleness z) high electrical resistance 

Last Answer : ANSWER: W -- BROWN COLOR (Crystalline boron is transparent.) 

Isobaric processes take place at constant: w) temperature x) volume y) pressure z) energy

Description : Isobaric processes take place at constant: w) temperature x) volume y) pressure z) energy

Last Answer : ANSWER: Y -- PRESSURE

The equilibrium constant for the gas phase reactio A + B = C + D is 10-3. The rate of the forward reaction is 10-11 cubic centimeters per molecule per second. What is the rate constant of the reverse reaction? w) 10 cubic centimeters per molecule per second x) 10-8 cubic centimeters per molecule per second y) 10-10 cubic centimeters per molecule per second z) 10-14 cubic centimeters per molecule per second

Description : The equilibrium constant for the gas phase reactio A + B = C + D is 10-3. The rate of the forward reaction is 10-11 cubic centimeters per molecule per second. What is the rate constant of ... second y) 10-10 cubic centimeters per molecule per second z) 10-14 cubic centimeters per molecule per second

Last Answer : ANSWER: Z -- 10-14 CUBIC CENTIMETERS PER MOLECULE PER SECOND 

A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero

Description : A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero

Last Answer : ANSWER: W -- CONSTANT

Relative to a solution with a pH of 4, a solution of pH = 6 is: w) higher in H+ concentration x) lower in OHy) less basic z) less acidic

Description : Relative to a solution with a pH of 4, a solution of pH = 6 is: w) higher in H+ concentration x) lower in OHy) less basic z) less acidic

Last Answer : ANSWER: Z -- LESS ACIDIC

A projectile is fired into the air at an angle of 23 degrees. At what other angle would this projectile have the same range if air resistance is neglected? w) 46 degrees x) 60 degrees y) 67 degrees z) 68 degrees

Description : A projectile is fired into the air at an angle of 23 degrees. At what other angle would this projectile have the same range if air resistance is neglected? w) 46 degrees x) 60 degrees y) 67 degrees z) 68 degrees

Last Answer : ANSWER: Y -- 67 DEGREES

What is the range of the Mid-Atlantic Ridge? w) from Cuba to the Azores x) from Iceland to Antarctica y) from Cape Hatteras to Gibraltar z) from Cape Horn to the Cape of Good Hope

Description : What is the range of the Mid-Atlantic Ridge? w) from Cuba to the Azores x) from Iceland to Antarctica y) from Cape Hatteras to Gibraltar z) from Cape Horn to the Cape of Good Hope

Last Answer : ANSWER: X -- FROM ICELAND TO ANTARCTICA

Which of the following mountain ranges were formed as a result of volcanic action? w) Appalachians x) Teton Range y) Front Range z) Cascade Range

Description : Which of the following mountain ranges were formed as a result of volcanic action? w) Appalachians x) Teton Range y) Front Range z) Cascade Range

Last Answer : ANSWER: Z -- CASCADE RANGE

Another method of locating points on a map besides the longitude and latitude method which is frequently employed in the western states is known as the: w) Arc Method x) Tier and Range System y) Square Similar Method z) none of these

Description : Another method of locating points on a map besides the longitude and latitude method which is frequently employed in the western states is known as the: w) Arc Method x) Tier and Range System y) Square Similar Method z) none of these

Last Answer : ANSWER: X -- TIER AND RANGE SYSTEM

Which of the following time periods includes part of the geologic range of dinosaurs? w) Mississippian x) Devonian y) Jurassic z) none of the above

Description : Which of the following time periods includes part of the geologic range of dinosaurs? w) Mississippian x) Devonian y) Jurassic z) none of the above

Last Answer : ANSWER: Y -- JURASSIC 

Continental shelves range in width from: w) 1,500 to 5,000 kilometers x) 1,500 to 3,000 kilometers y) 0 to 5,000 kilometers z) 0 to 1,500 kilometers

Description : Continental shelves range in width from: w) 1,500 to 5,000 kilometers x) 1,500 to 3,000 kilometers y) 0 to 5,000 kilometers z) 0 to 1,500 kilometers

Last Answer : ANSWER: Z -- 0 TO 1,500 KILOMETERS

The concentration of carbon dioxide in the atmosphere is in the range of: w) 1-10 parts per million x) 10-100 parts per million y) 100-1000 parts per million z) 1000-10,000 parts per million

Description : The concentration of carbon dioxide in the atmosphere is in the range of: w) 1-10 parts per million x) 10-100 parts per million y) 100-1000 parts per million z) 1000-10,000 parts per million

Last Answer : ANSWER: Y -- 100-1000 PARTS PER MILLION (the exact number is 350 ppm as of the time of this article)

Compared to terrestrial environments, aquatic environments are more stable in: w) temperature range x) producer consumer distribution y) sunlight absorbed z) number species

Description : Compared to terrestrial environments, aquatic environments are more stable in: w) temperature range x) producer consumer distribution y) sunlight absorbed z) number species 

Last Answer : ANSWER: W -- TEMPERATURE RANGE

For which of the following reasons is plutonium-238 used for generating electricity on spacecraft? w) It is an alpha emitter with long half-life. x) It is a beta emitter with high specific power. y) It occurs abundantly in nature. z) It has low specific power.

Description : For which of the following reasons is plutonium-238 used for generating electricity on spacecraft? w) It is an alpha emitter with long half-life. x) It is a beta emitter with high specific power. y) It occurs abundantly in nature. z) It has low specific power.

Last Answer : ANSWER: W -- IT IS AN ALPHA EMITTER WITH LONG HALF-LIFE. 

Refracting telescopes, if uncorrected, suffer from chromatic aberration. Chromatic aberration occurs because: w) red light is focused more strongly than blue light x) blue light is focused more strongly than red light y) the outer light rays are focused more strongly than the central rays, z) the central light rays are focused more strongly than the outer rays.

Description : Refracting telescopes, if uncorrected, suffer from chromatic aberration. Chromatic aberration occurs because: w) red light is focused more strongly than blue light x) blue light is focused more strongly than ... central rays, z) the central light rays are focused more strongly than the outer rays.

Last Answer : ANSWER: X -- BLUE LIGHT IS FOCUSED MORE STRONGLY THAN RED LIGHT 

The horse latitude which occurs at approximately 30o - 35o north is also known as the: w) doldrums x) calms of Cancer y) calms of Capricorn z) trough of the Pacific

Description : The horse latitude which occurs at approximately 30o - 35o north is also known as the: w) doldrums x) calms of Cancer y) calms of Capricorn z) trough of the Pacific

Last Answer : ANSWER: X -- CALMS OF CANCER

What is Titration ?

Description : What is Titration ?

Last Answer : The method of determining the density of a test solution by determining the equivalent volume of a proof solution by performing a quantitative reaction of a proof solution with a test solution of a certain volume in the presence of a suitable indicator is called titration.

A steady state within the body is termed a) Homeostasis. When a change occurs that causes a body function to deviate from its stable range, processes are initiated to restore and maintain the steady state or homeostasis. b) Constancy. Constancy refers to the balanced internal state of the human body maintained by physiologic and biochemical processes. c) Adaptation. Adaptation refers to a constant, ongoing process that requires change in structure, function, or behavior so that the person is better suited to the environment. d) Stress. Stress refers to a state produced by a change in the environment that is perceived as challenging, threatening, or damaging to the person’s dynamic balance or equilibrium.

Description : A steady state within the body is termed a) Homeostasis. When a change occurs that causes a body function to deviate from its stable range, processes are initiated to restore and maintain ... that is perceived as challenging, threatening, or damaging to the person's dynamic balance or equilibrium.

Last Answer : a) Homeostasis. When a change occurs that causes a body function to deviate from its stable range, processes are initiated to restore and maintain the steady state or homeostasis.

A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction. Is it: w) red x) yellow y) blue z) violet

Description : A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction. Is it: w) red x) yellow y) blue z) violet

Last Answer : ANSWER: W -- RED

When white light is passed through a double slit which of the following statements is TRUE: w) Each of the bright bands is dispersed into a spectrum x) Only the central band is dispersed into a spectrum y) All the bright bands except the central one are dispersed into a spectrum z) Each band has a single color different from its neighboring bands

Description : When white light is passed through a double slit which of the following statements is TRUE: w) Each of the bright bands is dispersed into a spectrum x) Only the central band is dispersed into ... one are dispersed into a spectrum z) Each band has a single color different from its neighboring bands 

Last Answer : ANSWER: Y -- ALL THE BRIGHT BANDS EXCEPT THE CENTRAL ONE ARE DISPERSED INTO THE SPECTRUM