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+4KI→2CuI+I2+2K2SO4 b) CuSO4+2KCl→K2SO4+CuCl2 c) RCHO(glucose)+2Cu(C4H4O6)2−2+5OH−→RCOO−+Cu2O+4C4H4O2−6+3H2O d) 2CuSO4⟶2CuO+2SO2+O2