How many grams of potassium carbonate must be added to 100 g of a 16% solution to get a 30% solution?

bystudin | May 28, 2020 | Education

ω = m (substance) / m (solution)
Find the mass of salt m = 100 * 0.16 = 16 g
ω = m (substance) / m (solution), let x be the mass of salt to be added, then:

0.3 = (16 + x) / (100 + x)
30 + 0.3x = 16 + x
x = 20 g

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