Explanation:

200ml of water is required to prepare 8% solution of 25 gm. of CuSO4. 5H2O. Calculations; Molecular weight of CuSO4,5H2O is 250.

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we know that

mass of solute/mass of solution*100=mass % of solution

therefore

here we  also know that mass of solution is mass of solute+mass of solvent

Here mass of solute=25g

mass of solution=25g+ mass of solvent(i.e. water) 

suppose mass of water is x

25/25+x*100=8

on solving we get the answer of x=287.5g and total mass of solution is 312.5 in order to obtain solution of cuso with 25g of cuso4.5h20

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