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Representation of Cell

A strip of co...

Question

A strip of copper is placed in four different colourless salt solutions. Which one of the solutions will finally turn blue?

A

A g N O_{3}

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B

K N O_{3}

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C

C a (N O_{3})_{2}

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D

Z n (N O_{3})_{2}

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Solution

The correct option is A $A g N O_{3}$
A typical reaction with silver nitrate is to suspend a rod of copper in a solution of silver nitrate and leave it for a few hours. The silver nitrate reacts with copper to form hairlike crystals of silver metal and a blue solution of copper nitrate.
$2 A g N O_{3} + C u \to C u (N O_{3})_{2} + 2 A g$

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Figure

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