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Question

Explain how Zn+2AgNO32Ag+Zn(NO3)2 is a redox reaction.

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Solution

Zn+2AgNO3(0)AgNO3x+(1)=0x=+1(Ag+) 2Ag+Zn(NO3)2(0)Zn(NO3)2x+2(1)=0x=2(Zn+2)

Here oxidation no. of Zn changes from 0 in Zn to +2 in Zn(NO3)2. It is oxidised.
Ag is reduced. Because , in AgNO3, it is in +1 state and reduced to O in Ag. Oxidation and reduction happened in a single reaction. So, it is a redox reaction.

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