Mixed 200 g of a solution with a mass fraction of acid 5% and 300 g of a solution with a mass fraction of acid 10%.

Mixed 200 g of a solution with a mass fraction of acid 5% and 300 g of a solution with a mass fraction of acid 10%. calculate the mass fraction of the solute acid in this mixture.

The weight of the resulting solution will be equal to the sum of the masses of the two initial solutions.

M = 200 + 300 = 500 grams;

The mass of acid in the first solution is 200 x 0.05 = 10 grams;

The mass of acid in the second solution is 300 x 0.1 = 30 grams;

The mass of acid in the resulting solution will be 10 + 30 = 40 grams;

The acid concentration in the new solution will be 40/500 = 0.08 = 8%;