In 380 g of water was dissolved 20 g of potassium chloride. Mass fraction of potassium chloride in the resulting solution is …
| September 1, 2021 | education
Find the mass of the solution of the resulting solution after dissolving the salt.
m (solution) = m (H2O) + m (KCl) = 380 g + 20 g = 400 g.
Mass fraction of salt in solution.
W (KCl) = m (KCl) / m (solution) • 100% = 20 g / 400 g • 100% = 5%.
Answer: 5.0%.
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