Question

a solution is 5.00% potassium chloride by mass. how much potassium chloride would you expect to collect by evaporating 150.0 g of the solution

Answer 1

When 150.0g of the solution are evaporated, 7.50g of KCl must be collected

Step-by-step explanation:

A solution 5% of potassium chloride means that there are 5g of KCl per 100g of solution.

When all the solution is evaporated, the solute KCl will be collected as a solid.

In 150g of solution there are:

150g * (5.00gKCl / 100g solution) = 7.50g of KCl are present in 150g of solution.

That means:

When 150.0g of the solution are evaporated, 7.50g of KCl must be collected