Concentration of Solutions

Q. Calculate the mass of sodium sulphate required to prepare a 20% (m/m%) solution in 100 g of water?

[2 Marks]
[Exemplar Question]
[Concentration of Solution]

Q. The amount of solute present in a given amount of solution represents:

1. dispersion
2. concentration
3. saturation
4. absorption

Q. The property by virtue of which sugar gets dissolved in water is called .

1. purity
2. fluidity
3. solubility

Q. A solution is said to be if no more solute can be dissolved in it.

1. saturated
2. unsaturated
3. diluted

Q. Which of the following represents the mass of glucose and mass of water required to make 250g solution which contains 25% glucose.

1. Mass of glucose = 62.5 g
2. Mass of water = 375 g
3. Mass of glucose = 75 g
4. Mass of water = 187.5 g

Q. 80 ml of a solution contains 20 g of solute. What is the concentration of this solution in terms of mass by volume percentage of the solution?

1. 25

Q. 80 mL of solution contains 20 g of solute. Calculate the concentration in terms of mass by volume percentage of the solution.

1. 45%
2. 55%
3. 25%
4. 35%

Q. A solution is prepared by dissolving 10 g of salt in 100 g of water. Calculate the mass percentage of the solution.

1. 9.09

Q. A solution contains 50 g of common salt in 350 g of water. Calculate the concentration in terms of mass by mass percentage of the solution.

1. 12.11%
2. 12%
3. 12.5%
4. 11%

Q. A solution is prepared by dissolving 10 grams of solute in 100 grams of water. Calculate the mass percentage of the solution.

1. 9.09%
2. 10%
3. 9.90%
4. 10.09%