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Question

From Na[Ag(CN)2] solution, silver can be displaced by:

A
Zn
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B
Al
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C
Ca
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D
All of the above
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Solution

The correct option is D All of the above
Zn,Al and Ca are more reactive than Ag. They displace Ag from sodium argento-cyanide (Na[Ag(CN)2])

For example: 2Na[Ag(CN)2](aq)+Zn(s)2Ag+Na2[Zn(CN)4]

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