Question

Calculate the mass of potassium chloride required to prepare 20 percent (mass percent) solution in 100gm of water.

Answer 1

Answer:

take the mass of Potassium Chloride required to prepare its 20% solution be

4.0

formula for mass by mass percent of a solution is equal to:mass of solute /Mass of

solution 100 = x ÷ 100 +x x 100

x

mass of solution is equal to mass of solute + mass of solvent we know

20 = x ÷ 100+ x x 100

0.2 = x= 100 + x

x = 20 +0.2x

20 = x - 0.2x 20= 0.8x

x = 20 ÷ 0.8

x = 25 therefore 25 grams of potassium chloride is

required to prepare 20% solution I think it's correct answer me please mark my answer as brainliest answer.