Which of the following statements is wrong about $C u S O_{4}$ ?

It reacts with

K I

to give

I_{2}

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It reacts with

K C l

to give

C l_{2}

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Its tartarate complex reacts with

N a O H

and glucose which on heating gives

C u_{2} O

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It gives

C u O

on strong heating in the presensce of air

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Solution

The correct option is B It reacts with $K C l$ to give $C l_{2}$
a) $2 C u S O_{4} + 4 K I \to 2 C u I + I_{2} + 2 K_{2} S O_{4}$
b) $C u S O_{4} + 2 K C l \to K_{2} S O_{4} + C u C l_{2}$
c) $R C H O (g l u c o s e) + 2 C u (C_{4} H_{4} O_{6})_{2}^{2 -} + 5 O H^{-} \to R C O O^{-} + C u_{2} O + 4 C_{4} H_{4} O_{6}^{2 -} + 3 H_{2} O$
d)
$2 C u S O_{4} ⟶ 2 C u O + 2 S O_{2} + O_{2}$

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