Description : A solution containing 2.675 g of `CoCl_(3).6NH_(3)` (molar mass `= 267.5 g mol^(-1)`) is passed through a cation exchanger. The chloride ions obtained
Last Answer : A solution containing 2.675 g of `CoCl_(3).6NH_(3)` (molar mass `= 267.5 g mol^(-1)`) is passed through a ... _(3)]` D. `[CoCl(NH_(3))_(5)]Cl_(2)`
Description : the hardness of a water sample (in terms of Equivalents of `CaCO_(3)`) containing `10^(-3)MCaSO_(4)` Is : (Molar mass of `CaSO_(4)=1365h mol^(-1)`)
Last Answer : the hardness of a water sample (in terms of Equivalents of `CaCO_(3)`) containing `10^(-3)MCaSO_(4)` Is : ( ... 10 ppm B. 50 ppm C. 90 ppm D. 100 ppm
Description : What is the osmolarity of a solution containing 100 grams of KCl in 250 ml of water?
Last Answer : moles of KCl = 100 g x 1 mole/74.5 g = 1.34 molesvolume = 250 ml= 0.25 Lmolarity = moles/liter = 1.34 moles/0.25 L = 5.37 MSince KCl dissociates completely into K+ and Cl-, you have 5.37M of each = total of 10.74 osmolar
Description : Express the relation among the cell constant, the resistance of the solution in the cell and the conductivity of the solution. How is the conductivity of a solution related to its molar conductivity -Chemistry
Last Answer : 1R×1a = Conductance (C) × Cell constant Molar conductance : (Λm) = K×1000c.
Description : Express the relation between conductivity and molar conductivity of a solution held in a cell. -Chemistry
Last Answer : Λm = KC= Conductivity Concentration
Description : What is the molarity of 10.0 g of KCl in 0.500 L of solution?
Last Answer : The molarity is 0,268.
Description : You have a solution of 5 molar Sodium Phosphate and n to prepare a solution of 500 millimolar Sodium Phosphate. How much water would you add to 100 milliliter of the original 5 molar solution to produc the 500 millimolar solution?
Last Answer : ANSWER: 900 MILLILITERS (or 0.9 LITERS)
Description : `CH_(3)NH_(2)+CHCl_(3)+KOH to` Nitrogen containing compound `+KCl + H_(2)O`.
Last Answer : `CH_(3)NH_(2)+CHCl_(3)+KOH to` Nitrogen containing compound `+KCl + H_(2)O`. A. `CH_(3)-C-=N` B. `CH_(3)-NH- ... -= C^(+)` D. `CH_(3)-N^(+)-=C^(-)`
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
Description : In an organic compound of molar mass `108 gm mol^-1 C, H and N` atoms are presents in `9 : 1 : 3.5` by mass. Molecular can be
Last Answer : In an organic compound of molar mass `108 gm mol^-1 C, H and N` atoms are presents in `9 : 1 : 3.5` by mass. ... (5)H_(6)N_(3)` D. `C_(4)H_(18)N_(3)`
Description : The volume strength of `1M H_(2)O_(2)` is (Molar mass of `H_(2)O_(2) = 34 g mol^(-1)`)
Last Answer : The volume strength of `1M H_(2)O_(2)` is (Molar mass of `H_(2)O_(2) = 34 g mol^(-1)`) A. `11.35` B. `22.4` C. `16.8` D. `5.6`
Description : Molar gas constant has value A. 7 J mol-1 K-1 B. 8 J mol-1 K-1 C. 8.31 J mol-1 K-1 D. 5 J mol-1 K-1
Last Answer : 8.31 J mol-1 K-1
Description : What is meant by ‘limiting molar conductivity’? -Chemistry
Last Answer : The molar conductivity of a solution at infinite dilution is called limiting molar conductivity and is represented by the symbol Λm.
Description : The resistance of a material with conductivity 2millimho/m 2 , length 10m and area 50m is a) 500 b) 200 c) 100 d) 1000
Last Answer : c) 100
Description : What is the conductivity of molar ?
Last Answer : The density of a solution as cm. When one mole of electrolytic substance is dissolved in it, the conductivity obtained by multiplying it by the relative conductivity of the solution is called molecular conductivity of the solution .
Description : The highest molar conductivity will be exhibited by the complex .
Last Answer : The highest molar conductivity will be exhibited by the complex . A. `[Cr(NH_(3))_(6)]Cl_(3)` B. `[Cr(NH_(3))_ ... (2)]Cl` D. `[Cr(NH_(3))_(6)Cl_(3)]`
Description : Arrange the following compounds in order of increasing molar conductivity . `(i) K[Co(NH_(3))_(2)(NO_(2))_(4)]" " (ii) [Cr(NH_(3))_(3)(NO_(2))_(3)]` `
Last Answer : Arrange the following compounds in order of increasing molar conductivity . `(i) K[Co(NH_(3))_(2)(NO_(2))_(4)]" ... )" " (iv) [Cr(NH_(3))_(6)]Cl_(3)`
Description : A 2.5 gm impure sample containing weak monoacidic base (Mol. wt. = 45) is dissolved in 100 ml water and titrated with 0.5 M HCI when of `((1)/(5))^(th
Last Answer : A 2.5 gm impure sample containing weak monoacidic base (Mol. wt. = 45) is dissolved in 100 ml ... D. Weight percentage of base in given sample is 80%.
Description : Which types of register holds a single vector containing at least two read ports and one write ports: a. Data system b. Data base Cc. Memory d. Vector register
Last Answer : d. Vector register
Description : Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the ... extraction achieved in the unit is (A) 25% (B) 50% (C) 70% (D) 90%
Last Answer : (B) 50%
Description : Give reason for the following: (a)LiCl is more covalent than KCl. (b)LiF has lower melting point than NaCl. (c)CuCl is more covalent than NaCl.
Last Answer : Ans(a).Due to smaller size and high poalrising power of Li+ ion ,LiCl is more covalent than KCl. (b)Small cation Li+ ion highly polarizes large anion I- , LiI is more covalent and hence has ... to pseudo inert gas configuration, Cu+ is more polarizing than Na+ and hence CuCl is more Covalent NaCl.
Description : cm. What is molar solution ?
Last Answer : : If half a mole ( 0.5 mole) of liquid per liter volume of a solution is dissolved at a given temperature , then the solution should be dissolved in cm. Called molar solution.
Description : What is molar solution ?
Last Answer : Molar solution: If one mole of liquid is dissolved in one liter of solution, it is called 1 molar solution. For example, if 32 grams of oxygen per liter is dissolved.
Description : FeSO4 solution mixed with (NH4 ) 2 SO4 solution in 1 : 1 molar ratio gives the test of Fe2+ ion but CuSO4 solution mixed with aqueous ammonia in 1 : 4 molar ratio does not give the test of Cu2+ ion. Explain why ?
Last Answer : When FeSO4 and (NH4 ) 2 SO4 solution are mixed in 1 : 1 molar ratio, a double salt is formed. It has the formula FeSO4 (NH4 ) 2 SO4 . 6 H2O. In aqueous solution, the salt dissociates. When CuSO4 and NH3 are mixed in the molar ratio of 1 : 4 in solution, a complex [Cu (NH3 ) 4 ] SO4 is formed.
Description : A molar solution is one that contains one mole of a solute in [IIT 1986] (A) 1000 g of the solvent (B) One litre of the solvent (C) One litre of the solution (D) 22.4 litres of the solution
Last Answer : (C) One litre of the solution
Description : The compound which would have the greatest molar effect on the colligative properties of a dilute solution would be: w) CaCl2 x) NaCl y) C6H12O6 z) Benzene
Last Answer : ANSWER: W -- CaCl2
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
Description : If one begins with a 12 Normal solution of HCl and wishes to make a 2 Molar solution, what will be the ratio of 12N HCl to the final solution volume?
Last Answer : ANSWER: 1:6
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
Description : The pH of a 0.005 molar solution of calcium hydroxide is:
Last Answer : ANSWER: 12
Description : 2.5 liters of a sodium chloride (NaCl) solution contain 5 moles of the solute. What is the molarity? w) 5 molar x) 2 molar y) 2.5 molar z) 12.5 molar
Last Answer : ANSWER: X -- 2 MOLAR
Description : For determine the specific gravity of soil solids, using a pycnometer of 500 cc., the following data is available : Weight of dry empty pycnometer = 125 g Weight of dried soil and pycnometer = 500 g Weight of dried soil and distilled ... of soil solids, is (A) 2.0 (B) 2.25 (C) 2.50 (D) 2.75
Last Answer : (C) 2.50
Description : 17. The brain capacity of Neanderthal man is--- (a) 1400 cc (b) 900 cc (c) 650-800 cc (d) 400-500 cc
Last Answer : (a) 1400 cc
Description : The heat of solution of anhydrous `CuSO_(4)` and `CuSO_(4).5H_(2)O` are -15.89 and 2.80 Kcal `mol^(-1)` respectively. What will be the heat of hydrati
Last Answer : The heat of solution of anhydrous `CuSO_(4)` and `CuSO_(4).5H_(2)O` are -15.89 and 2.80 Kcal `mol^(-1) ... `18.69` Kcal C. `-28.96` Kcal D. 28.96 Kcal
Description : Molarity and Molality of a solution of an liquid (mol. Wt. = 50) in aqueous solution is 9 and 10 respectively. What is the density of solution ?
Last Answer : Molarity and Molality of a solution of an liquid (mol. Wt. = 50) in aqueous solution is 9 and 10 respectively. What ... /cc C. 1.05 g/cc D. 1.35 g/cc
Description : A solution contains 1g mol. Each of p-toluene diazonium chloride and p-nitrophenyl diazonium cholride. To this 1g mol.of alkaline solution of phenol i
Last Answer : A solution contains 1g mol. Each of p-toluene diazonium chloride and p-nitrophenyl diazonium ... Predict the major product. Explain your answer.
Description : What is the molality of a solution the has 3 mol of glucose on 6 kg of water?
Last Answer : Molality (m) is moles of solute per kg of solvent. 3 moles/6 kg= 0.5 molal.
Description : What is the molarity of a solution that contains 0.40 mol HCl in 9.79 L solution?
Last Answer : The molarity is 0,041
Description : What is the molarity of 5.60 mol of sodium carbonate in 1500 ml of solution?
Last Answer : Molarity = moles of solute/Liters of solution ( 1500 mL = 1.5 Liters ) Molarity = 0.800 moles NaOH/1.5 Liters = 0.533 M sodium hydroxide ...
Description : Cd is always __________ Cc (A) Greater than (B) Less than (C) Equal to (D) Either more or less than
Last Answer : (A) Greater than
Description : Find the conduction current density when conductivity of a material is 500 units and corresponding electric field is 2 units. a) 500 b) 250 c) 1000 d) 2000
Last Answer : c) 1000
Description : During extraction of a maxillary third molar the tuberosity is fractured; however, it remains in place attached to the mucoperiosteum. Which of the following procedures should be employed:** A. Remove the ... then suture. D. If fractured tuberosity is greater than 2 cm, leave in place and suture
Last Answer : B. Leave the tuberosity and stabilize if required
Description : What are the properties of KCl compound ?
Last Answer : 1. High melting point and boiling point. 2. Soluble in polar solvent (water) but insoluble in polar solvent. 3. In solid state it remains in the form of crystals. 4. Electrically conductive in molten or dissolved state.
Description : The decomposition of `KClO_(3)` to KCl and `O_(2)` on heating is an example of :
Last Answer : The decomposition of `KClO_(3)` to KCl and `O_(2)` on heating is an example of : A ... redox change C. Disproportionation or auto redox change D. None
Description : How many are redox reaction- `{:((i),K_(4)[Fe (CN)_(6)] + "conc."H_(2)SO_(4) overset(Delta)rarr,(ii),"conc." H_(2)SO_(4) + KCl rarr),((iii),"conc." H_
Last Answer : How many are redox reaction- `{:((i),K_(4)[Fe (CN)_(6)] + "conc."H_(2)SO_(4) overset(Delta)rarr,(ii)," ... ,((ix),"conc." H_(2)SO_(4) + Cu rarr,,):}`
Description : One mole of acidified `K_(2)Cr_(2)O_(7)` on reaction with excess of KCl will liberate….., moles of `I_(2)`.
Last Answer : One mole of acidified `K_(2)Cr_(2)O_(7)` on reaction with excess of KCl will liberate….., moles of `I_(2)`. A. 6 B. 1 C. 7 D. 3
Description : `NiCl_(2) overset(KCN)to "complex"A` `NiCl_(2) underset("excess") overset(KCl)to "complex"B` A & B complexes have the co-ordination number 4. The hybr
Last Answer : `NiCl_(2) overset(KCN)to "complex"A` `NiCl_(2) underset("excess") overset(KCl)to "complex"B` A & B complexes have ... ^(2) & sp^(3)` D. both `sp^(3)`
Description : During the electrolysis of carnallite , `MgCl_(2)` is decomposed and not KCl . This is because of :
Last Answer : During the electrolysis of carnallite , `MgCl_(2)` is decomposed and not KCl . This is because of : A. lower ... both (A) and (B) D. none of the above