Concentration of a Solution

IMPORTANT

Concentration of a Solution: Overview

This topic covers concepts, such as, Concentration Terms of Solutions, Mass Percentage (W/W), Formality of a Solution & Volume to Mass Percentage etc.

Important Questions on Concentration of a Solution

MEDIUM
IMPORTANT

A 5 molar solution of   H 2 S O 4 is diluted from 1 litre to a volume of 10 litres, the normality of the resulting solution will be :

EASY
IMPORTANT

Liquid benzene  (C6H6) burns in oxygen according to the equation

2C6H6(l)+15O2(g)12CO2(g)+6H2O(g)

How many litres of  O2 at STP are needed to complete the combustion of 39 g of liquid benzene?  (MolecularweightofO2=32,  C6H6=78)

EASY
IMPORTANT

A 100 grams of solution contains 25 ml of solute. Calculate volume-mass percentVW% of the solution.

EASY
IMPORTANT

A 100 grams of solution contains 25 ml of solute. Calculate volume-mass percentVW% of the solution.

MEDIUM
IMPORTANT

A 250 grams of solution contains 30 ml of solute. Calculate volume-mass percentVW% of the solution.

EASY
IMPORTANT

A 150 grams of solution contains 25 ml of solute. Calculate volume-mass percentVW% of the solution.

EASY
IMPORTANT

Define volume to mass percentage with reference to the concentration of a solution.

MEDIUM
IMPORTANT

What is formality? Explain with example.

HARD
IMPORTANT

100mL of 0.8 M NaOH is used to neutralise 100 mL of the solution obtained by passing 2.70 g SO2Cl2 in water. Select the correct statement:

HARD
IMPORTANT

What is the mass of urea required for making 2.5 kg of 0.25 molal aqueous solution?

HARD
IMPORTANT

A solution has been prepared by mixing 8.5 mL of ethanol with 80 mL of water. Calculate the volume percentage of the solution.    

HARD
IMPORTANT

20 g of sodium chloride is dissolved in water to make up the volume of the solution to 250 mL. Calculate the mass by volume percentage of sodium chloride in the solution.

HARD
IMPORTANT

A solution contains 15 mL of ethyl alcohol mixed with 110 mL of water. Calculate the volume percentage of the solution.   

HARD
IMPORTANT

How many grams of Sodium Chloride is required to make 200 mL aqueous solution of 5% (w/v), NaCl.

(Write the final answer without unit)

MEDIUM
IMPORTANT

22.22 g of urea was dissolved in 300 g of water. Calculate the number of moles of urea and molality of the urea solution.

(Given: Molar mass of urea = 60 g mol1)

MEDIUM
IMPORTANT

Calculate the mole fraction of sulphuric acid in a solution containing 20% of sulphuric acid by mass.

MEDIUM
IMPORTANT

3.0 g of oxalic acid CO2H2·2H2O is dissolved in a solvent to prepare a 250 mL solution. The density of the solution is 1.9 g/mL. The molality and normality of the solution, respectively, are closest to

HARD
IMPORTANT

Calculate the mole fraction of ethylene glycol in a solution containing 20% of ethylene glycol by mass.

MEDIUM
IMPORTANT

Unit of mole fraction is

MEDIUM
IMPORTANT

1 gram NaOH is dissolved in 14 dm3 of water. The molarity of solution is _____.