From 500 g of 10% solution, 200 g of water was evaporated to determine the mass fraction of the new solution

univerkov | April 25, 2021 | education

m2 (in-va) = m1 (in-va) = ω1 (in-va) * m1 solution (in-va) / 100% = 10% * 500/100% = 50 g;
m2 solution (in-va) = m1 solution (in-va) – m (water) = 500 – 200 = 300 g;
ω2 (in-islands) = m2 (in-islands) * 100% / m2 solution (in-islands) = 50 * 100% / 300 = 16.7%.

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