When Salt dissolving water physical change or chemical change?

When Salt dissolving water physical change or chemical change?
by

1 Answer

Answer :

It is a physical change because the chemical composition of saltand water do not change. You can separate the salt and waterphysically by allowing the water to evaporate, which leaves thesalt.
by

Related questions

When Salt dissolving water physical change or chemical change?

Description : When Salt dissolving water physical change or chemical change?

Last Answer : It is a physical change because the chemical composition of saltand water do not change. You can separate the salt and waterphysically by allowing the water to evaporate, which leaves thesalt.

Is Acid rain dissolving paint off a wall a chemical change or physical change?

Description : Is Acid rain dissolving paint off a wall a chemical change or physical change?

Last Answer : Chemical change

How does dissolving a salt molecule in water make its atoms ionize? -Space

Description : How does dissolving a salt molecule in water make its atoms ionize? -Space

Last Answer : When salt is mixed with water, the salt dissolves because the covalent bonds of water are stronger than the ionic bonds in the salt molecules. Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together.

After dissolving 0.25 kg of salt in 1 kg of water, its volume becomes 1200 cc. What is the concentration of solution ?

Description : After dissolving 0.25 kg of salt in 1 kg of water, its volume becomes 1200 cc. What is the concentration of solution ?

Last Answer : We know , 1 cc = 1cm ^ 3 = (10 ^ -6) m ^ 3 Density of salt water = (1 + 0.25) / (1200 × 10 ^ - ৬) = 1.04 kg / (m 3)

What is produced by dissolving salt in water ?

Description : What is produced by dissolving salt in water ?

Last Answer : When salt is dissolved in water, solution is produced.

The solution made by dissolving Salt (NaOH) in water is called as

Description : The solution made by dissolving Salt (NaOH) in water is called as

Last Answer : Ans. Brine solution

What is the molarity of a salt solution prepared b dissolving three moles of salt in 500 milliliters of water? w) 1 x) 2 y) 4 z) 6

Description : What is the molarity of a salt solution prepared b dissolving three moles of salt in 500 milliliters of water? w) 1 x) 2 y) 4 z) 6

Last Answer : ANSWER: Z -- 6

What is the molality of a salt solution prepared by dissolving two moles of salt in 500 grams of water?

Description : What is the molality of a salt solution prepared by dissolving two moles of salt in 500 grams of water?

Last Answer : ANSWER: 4

Is salt the slowest dissolving powder?

Description : Is salt the slowest dissolving powder?

Last Answer : Need answer

What is the change in dissolving sugar in water ?

Description : What is the change in dissolving sugar in water ?

Last Answer : The physical change of dissolving sugar in water.

Is melting salt a chemical reaction or physical reaction?

Description : Is melting salt a chemical reaction or physical reaction?

Last Answer : Need answer

What is the molality of a solution made by dissolving 6 moles of Noah in 3 kg of water?

Description : What is the molality of a solution made by dissolving 6 moles of Noah in 3 kg of water?

Last Answer : Feel Free to Answer

Is dissolving sugar & water reversible or irreversible?

Description : Is dissolving sugar & water reversible or irreversible?

Last Answer : ,irrrversible

Detergents dissolved in water help in cleaning clothes by A. Increasing the temperature of water B. Reacting chemically with dirt C. Reducing the surface tension of water D. Dissolving dirt

Description : Detergents dissolved in water help in cleaning clothes by A. Increasing the temperature of water B. Reacting chemically with dirt C. Reducing the surface tension of water D. Dissolving dirt

Last Answer : ANSWER: C

The process of dissolving an acid or a base in water is a highly - (1) Exothermic reaction (2) Endothermic reaction (3) Sublimation reaction (4) Redux reaction

Description : The process of dissolving an acid or a base in water is a highly - (1) Exothermic reaction (2) Endothermic reaction (3) Sublimation reaction (4) Redux reaction

Last Answer : (1) Exothermic reaction Explanation: The process of dissolving an acid or a base in water is a highly exothermic one. This is why care must be taken while mixing concentrated nitric acid or sulphuric acid with water.

Uranium is recovered from its ore (pitchblende) by (A) Froth floatation technique (B) Leaching with sulphuric acid (C) Smelting in a furnace (D) Dissolving in water

Description : Uranium is recovered from its ore (pitchblende) by (A) Froth floatation technique (B) Leaching with sulphuric acid (C) Smelting in a furnace (D) Dissolving in water

Last Answer : (B) Leaching with sulphuric acid

Which of the following operations does not involve leaching? (A) Dissolving gold from ores (B) Dissolving pharmaceutical products from bark or roots (C) Dissolving sugar from the cells of the beet (D) Removing nicotine from its water solution by kerosene

Description : Which of the following operations does not involve leaching? (A) Dissolving gold from ores (B) Dissolving pharmaceutical products from bark or roots (C) Dissolving sugar from the cells of the beet (D) Removing nicotine from its water solution by kerosene

Last Answer : (D) Removing nicotine from its water solution by kerosene

Detergents dissolved in water help in cleaning clothes by-----? A. Increasing the temperature of water B. Reacting chemically with dirt C. Reducing the surface tension of water (Answer) D. Dissolving dirt

Description : Detergents dissolved in water help in cleaning clothes by-----? A. Increasing the temperature of water B. Reacting chemically with dirt C. Reducing the surface tension of water (Answer) D. Dissolving dirt

Last Answer : C. Reducing the surface tension of water (Answer)

Pick up the correct statement from the following: (A) Lime is available in Free State (B) Lime is available by dissolving calcium carbonate in water (C) Lime is available by calcining calcium carbonate at 900°C (D) Lime is nothing but calcium chloride

Description : Pick up the correct statement from the following: (A) Lime is available in Free State (B) Lime is available by dissolving calcium carbonate in water (C) Lime is available by calcining calcium carbonate at 900°C (D) Lime is nothing but calcium chloride

Last Answer : Answer: Option C

An aqueous solution of sodium chloride is prepared by dissolving 10kg of sodium chloride in 50 kg of water find (i) Weight % (ii) Mole % of solution. [Atomic weight of Na = 23, Cl = 35.5]

Description : An aqueous solution of sodium chloride is prepared by dissolving 10kg of sodium chloride in 50 kg of water find (i) Weight % (ii) Mole % of solution. [Atomic weight of Na = 23, Cl = 35.5] 

Last Answer : Weight of NaCl = 10 kg Weight of H2O = 50 kg Total weight = 60 kg Weight % of NaCl = (10/ 60) * 100 =16.67% Weight % of H2O = (50/ 60) * 100 = 83.33% Molecular weight of NaCl = 58.5 k moles of NaCl ... 100 = 5.79% Mol % of H2O = (moles of H2O / Total moles)*100  = (2.78/ 2.949)*100 = 94.26%

Sperms produce an enzymatic substance or lysin for dissolving egg coverings. It is called

Description : Sperms produce an enzymatic substance or lysin for dissolving egg coverings. It is called

Last Answer : Sperms produce an enzymatic substance or lysin for dissolving egg coverings. It is called A. ... B. hyaluronidase C. Androgamone D. Diastase.

Assertion : Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal. Reason : Copp

Description : Assertion : Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal. Reason : Copp

Last Answer : Assertion : Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation ... : Copper is extracted by hydrometallurgy.

Pyrosulphuric acid may be synthesised by dissolving `SO_(3)` in

Description : Pyrosulphuric acid may be synthesised by dissolving `SO_(3)` in

Last Answer : Pyrosulphuric acid may be synthesised by dissolving `SO_(3)` in A. `H_(2)O` B. `H_(2)SO_(3)` C. `H_(2)SO_(4)` D. `H_(2)S_(2)O_(8)`

What are three way of speeding up dissolving?

Description : What are three way of speeding up dissolving?

Last Answer : firstly Temperature, size of pieces, and stirring

How can you speed uo the dissolving process when preparing juice from frozen concentrate?

Description : How can you speed uo the dissolving process when preparing juice from frozen concentrate?

Last Answer : Feel Free to Answer

What is the molar mass of haemocyanin and the freezing point of the solution when an aqueous solution is prepared by dissolving 1.5 grams of haemocyanin a protein obtained from crabs in 0.25 litres of?

Description : What is the molar mass of haemocyanin and the freezing point of the solution when an aqueous solution is prepared by dissolving 1.5 grams of haemocyanin a protein obtained from crabs in 0.25 litres of?

Last Answer : Haemocyanins are a group of proteins.

What is the molarity of a solution made by dissolving 6 moles of naoh in 3 kg?

Description : What is the molarity of a solution made by dissolving 6 moles of naoh in 3 kg?

Last Answer : Need answer

What are the citizens of Louisiana dissolving themselves of?

Description : What are the citizens of Louisiana dissolving themselves of?

Last Answer : h

Which of the following is not related to the powers of the Governor? (1) Diplomatic and military powers (2) Power to appoint Advocate General (3) Summoning, proroguing and dissolving State Legislature (4) Power to grant pardons, reprieves, respites or remission of punishments

Description : Which of the following is not related to the powers of the Governor? (1) Diplomatic and military powers (2) Power to appoint Advocate General (3) Summoning, proroguing and dissolving State Legislature (4) Power to grant pardons, reprieves, respites or remission of punishments

Last Answer : (1) Diplomatic and military powers Explanation: Diplomatic and military powers is related to the powers of the President. It is not the power of Governor.

Pick out the wrong statement regarding the solubility characteristics of high polymers. (A) Greater the degree of cross-linking in the polymer, lesser is its solubility (B) Polymers having more aliphatic character are more soluble in aliphatic solvents, while those polymers having more aromatic character are more soluble in aromatic solvents (C) Swelling tendency or solubility of polymers in a particular solvent decreases with increase in molecular weight of the solvent (D) High molecular weight polymers on dissolving gives solution of very low viscosity

Description : Pick out the wrong statement regarding the solubility characteristics of high polymers. (A) Greater the degree of cross-linking in the polymer, lesser is its solubility (B) Polymers having more ... of the solvent (D) High molecular weight polymers on dissolving gives solution of very low viscosity

Last Answer : (D) High molecular weight polymers on dissolving gives solution of very low viscosity

Furfural solvent extraction is used for upgrading (by dissolving aromatics) (A) Naphtha (B) Lubricating oils (C) Wax (D) Cracking feedstock

Description : Furfural solvent extraction is used for upgrading (by dissolving aromatics) (A) Naphtha (B) Lubricating oils (C) Wax (D) Cracking feedstock

Last Answer : (B) Lubricating oils

Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is (A) Added to the feed slurry (B) Pre-coated on the filter medium prior to filtration (C) Separated from the cake by dissolving solids or by burning it off (D) All 'a', 'b' & 'c'

Description : Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is (A) Added to the feed slurry (B) Pre ... the cake by dissolving solids or by burning it off (D) All 'a', 'b' & 'c'

Last Answer : (D) All 'a', 'b' & 'c'

The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which ‘D’ is the diffusivity of solute, is (A) D/a (B) D/2a (C) Proportional to √D (D) Dependent on the Reynolds number

Description : The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which ‘D’ is the diffusivity of solute, is (A) D/a (B) D/2a (C) Proportional to √D (D) Dependent on the Reynolds number

Last Answer : (D) Dependent on the Reynolds number

While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is (A) Infinity (B) Unity (C) Constant (D) Negative

Description : While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is (A) Infinity (B) Unity (C) Constant (D) Negative

Last Answer : (C) Constant

9.Acrosome is important for ----------- . a)ATP production, b)Dissolving membrane of ovum, c)Motility of sperm, d)Nutrition of sperm

Description : 9.Acrosome is important for ----------- . a)ATP production, b)Dissolving membrane of ovum, c)Motility of sperm, d)Nutrition of sperm

Last Answer : b)Dissolving membrane of ovum,

The formation of pockets of gas in a liquid is called: w) absorption x) cavitation y) adsorption z) dissolving

Description : The formation of pockets of gas in a liquid is called: w) absorption x) cavitation y) adsorption z) dissolving

Last Answer : ANSWER: X -- CAVITATION

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

Is a physical change A.Forming a mixture B.Burning wood C.Food turning into waste in the intestines D.Turning solid sodium and chlorine gas into salt?

Description : Is a physical change A.Forming a mixture B.Burning wood C.Food turning into waste in the intestines D.Turning solid sodium and chlorine gas into salt?

Last Answer : What is the answer ?

The addition of any substance to water which leads to change in its physical and chemical characteristics is defined as water pollution. It results in

Description : The addition of any substance to water which leads to change in its physical and chemical characteristics is defined as water pollution. It results in

Last Answer : The addition of any substance to water which leads to change in its physical and ... Increased photosynthesis D. Increased turbidity and deoxygenation

Is adding water to soup A physical change or chemical change?

Description : Is adding water to soup A physical change or chemical change?

Last Answer : Need answer

Is mixing kool aid in water a physical or chemical change?

Description : Is mixing kool aid in water a physical or chemical change?

Last Answer : Physical change. If you evaporate the water, you get the KoolAid back.

Any change in physical (smell, colour taste), chemical and biological characteristics of water is called

Description : Any change in physical (smell, colour taste), chemical and biological characteristics of water is called

Last Answer : water pollution

Is there any physical harm in eating extra salt with rice ?

Description : Is there any physical harm in eating extra salt with rice ?

Last Answer : Eating too much salt with any food can be harmful. Excess salt should be stopped if you have blood pressure or kidney problems.

What is the difference between a chemical change and a physical change?

Description : What is the difference between a chemical change and a physical change?

Last Answer : Answer: A chemical change is a process that results in the formation of one or more new substances with different chemical properties, while a physical change is a process that changes the physical ... it changes the state of the water from solid to liquid without changing its chemical composition.

What is the difference between a physical change and a chemical change?

Description : What is the difference between a physical change and a chemical change?

Last Answer : A: A physical change involves a change in physical appearance, while a chemical change involves a change in chemical composition.

What is the difference between a chemical and a physical change?

Description : What is the difference between a chemical and a physical change?

Last Answer : A: A chemical change results in the formation of new substances with different chemical properties, while a physical change does not result in the formation of new substances.

Wouldn't an electron exchange in a chemical reaction be considered a physical change?

Description : Wouldn't an electron exchange in a chemical reaction be considered a physical change?

Last Answer : Do your own homework. Seriously.

Is there really a difference between a chemical change and a physical change?

Description : Is there really a difference between a chemical change and a physical change?

Last Answer : Yes? A total difference.

Give me 5 examples of physical change & chemical change?

Description : Give me 5 examples of physical change & chemical change?

Last Answer : If I remember correctly chemical change- bubbles, smell, color, temperature, light emitted, taste… I think there are more. Physical… Seems kind of obvious. Try reading your book instead of asking Fluther to help you with your homework.

Why is the tearing of paper a physical change not a chemical change?

Description : Why is the tearing of paper a physical change not a chemical change?

Last Answer : Found a possible answer =/ http://answers.yahoo.com/question/index?qid=20081017160844AAXQ9jE