Q.

How much copper can be obtained from 100 g of copper sulphate (CuSO4)?

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a

45.79 g Cu

b

30.50 g Cu

c

39.81 g Cu

d

50.10g Cu

answer is C.

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Detailed Solution

Molar mass of CuSO4=63.54+32.06+(4×16)                                    =159.6 g mol-1159.6 g CuSO4 contain =63.54 g Cu1g CuSO4 contain =63.54159.6g Cu∴100 g CuSO4 contains =63.54×100159.6=39.81 g Cu
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