Molality Quiz 1

Question 1

Calculate the molality of a $$3.5M$$ $$KCl$$ solution that has a density of $$1.05 g/mL$$.

Accepted Answer

$$4.4m$$

Answer

$$4.6m$$

Answer

$$5.1m$$

Answer

$$4.8m$$

Question 2

What would be the molality of a solution if you dissolve $$4.6g$$ of sulphuric acid in $$100g$$ of water?

Accepted Answer

None of these.

Answer

$$0.55m$$

Answer

$$0.65m$$

Answer

$$0.75m$$

Question 3

The molality of solution of $${{H}_{2}}S{{O}_{4}}$$ is $$9.6m$$. Calculate the weight of solute in $$1kg$$ of this acid solution.

Accepted Answer

$$484.7g$$

Answer

$$474.7g$$

Answer

$$474.1g$$

Answer

$$464.7g$$

Question 4

Ram made a solution by mixing $$13.0g$$ of $$NaOH$$ and 87.0g $${{H}_{2}}O$$. Calculate the molality of the new solution;

Accepted Answer

$$3.73m$$

Answer

$$3.53m$$

Answer

$$3.63m$$

Answer

$$3.03m$$

Question 5

Have you ever tried a spoonful of sugar syrup? Then, to make sugar syrup, measure the molality of $$34.5g$$ of sugar dissolved in $$215g$$ of water.

Accepted Answer

0.554m

Answer

0.559m

Answer

0.613m

Answer

0.603m