100 g of hydrochloric acid was dissolved in 200 g of water. Find the mass fraction of acid in the resulting solution.
| July 26, 2021 | education
Find the mass fraction of hydrochloric acid in the solution according to the formula:
W (in-va) = m (in-va) / m (solution) • 100%.
Find the mass of the solution after adding the acid:
m (solution) = m (water) + m (water) = 100 + 200 = 300 g.
Accordingly, the percentage concentration is equal to:
W (HCl) = m (HCl) / m (solution) • 100% = 100/300 • 100% = 30%.
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