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Question

Which of the following statements is wrong about CuSO4?

A
It reacts with KI to give I2
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B
It reacts with KCl to give Cl2
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C
Its tartarate complex reacts with NaOH and glucose which on heating gives Cu2O
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D
It gives CuO on strong heating in the presensce of air
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Solution

The correct option is B It reacts with KCl to give Cl2
a) 2CuSO4+4KI2CuI+I2+2K2SO4
b) CuSO4+2KClK2SO4+CuCl2
c) RCHO(glucose)+2Cu(C4H4O6)22+5OHRCOO+Cu2O+4C4H4O26+3H2O
d)
2CuSO42CuO+2SO2+O2

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