1.

Calculate the percentage of water of crystallisation in the sample of blue vitriol (CuSO_(4).5H_(2)O).

Answer»

Solution :`"MOL. MASS of "CuSO_(4).5H_(2)O=63.5+32+4xx16+5xx18=249.5`
`"No. of PARTS by mass of "H_(2)O=5xx18=90""therefore""%" of "H_(2)O=(90)/(249.5)xx100=36.07%.`


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