Question

A solution contains 25 grams of KNO3 dissolved in 200. grams of H2O. What is the percent by mass of potassium nitrate in this solution?

125%

1%

11%

12.5%

Answer 1

Percent mass of KNO3 in solution = 11% (Approx)

Step-by-step explanation:

Given:

Mass of KNO3 = 25 grams

Mass of H2O = 200 grams

Find:

Percent mass of KNO3 in solution

Computation:

Mass of solution = 25 + 200 = 225 grams

Percent mass of KNO3 in solution = [25/225]100

Percent mass of KNO3 in solution = 11.111%

Percent mass of KNO3 in solution = 11% (Approx)