Question

when 21.91 g of CuSO4 is heated to drive off water 14 g of anhydrous copper sulfate remains. what is the formula of the hydrate

Answer 1

the water of crystallisation is removed from hydrated copper(II) sulfate. The mass of water is found by weighing before and after heating. This information is used to find x in the formula:
`cuSO_(4) xh_(2) 0`.xH2O