CH-948
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 it becomes anhydrous CuSO₄. The mass of the solid after heating is 3.20 g. What is the percentage of water of crystallisation in the original sample?
- 28.0%
- 36.0%
- 64.0%
- 72.0%
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