The concentration of a solution of lithium chlorite dissolved in water is 12.5% by mass. In a ________ g sample of this solution, there are 52.5 g of water.
A)60.0
B)45.9
C)0.00600
D)23.8
E)1.67

Question

Quizplus · Accepted Answer

The concentration is 12.5% by mass, meaning 12.5 g of lithium chlorite per 100 g of solution. Therefore, 87.5 g of the solution is water. To find the total mass of the solution when there are 52.5 g of water, set up the proportion: 87.5 g water / 100 g solution = 52.5 g water / x g solution. Solving for x gives 60.0 g.

The Concentration of a Solution of Lithium Chlorite Dissolved in Water