70 g of acid was dissolved in 130 g of water. Calculate the mass fraction of the solute.
| March 4, 2021 | education
In the general case, the mass fraction of a substance in a solution (usually expressed as a percentage) is the ratio of the mass of a solute to the mass of a solution (mass of a solvent + mass of a solute).
w (%) = (mw / mr) * 100%
In this case, it is the ratio of the mass of the acid to the total mass of water and acid.
w (acids) = (70 / (70 + 130)) * 100% = 35%.
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