Question

Calculate the mass of potassium chloride required to prepare its 40% solution in 250 gm of water

Answer 1

Answer:

375gm

Explanation:

Let the mass of potassium chloride be = x gm

A/Q,

[250/(250+m)}x100 = 40

[250/(250+m)]x5 = 2

1250 = 500+2m

2m = 750

m = 750/2 = 375 gm