280 g of 10% H3PO4 solution was added 49 g of acid. What is the mass fraction of the solute in the solution?
| February 9, 2021 | education
The solution contained (10%: 100%) * 280 = 28 g of acid, and it became 28 + 49 = 77 g.
Mass fraction of H3PO4 in solution is now:
77: (280 + 49) * 100% = (77: 329) * 100% = 23.4%.
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