CH-798
Percentage yield and purity
Chemistry · Secondary 3 · Medium · Percentage yield and purity
A student heats 5.00 g of hydrated copper(II) sulfate, CuSO₄·5H₂O, until all the water is driven off. The mass of anhydrous CuSO₄ obtained is 3.20 g. What is the percentage by mass of water in the hydrated salt?
- 32.0%
- 36.0%
- 40.0%
- 64.0%
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