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Is it safe to stir 1M AgNO(3) solution w...

Is it safe to stir 1M `AgNO_(3`) solution with copper spoon? Given:`E^(@)Ag^(+)//ag=0.80V,E^(@)Cu^(2+)//Cu^(2+)//Cu=0.34V`

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Since, `E_(Ag^(+)|Ag)^(0)`=+0.80V is higher than ` E_(Cu^(2+)| Cu)^(0)` = `- E_( Cu | Cu _(2+))^(0)` = -(-0.34)= +0.34 V therefore, Ag+ ions can easily accept electrons from Cu. In other words, the following reactions will occur.
`Cu + 2Ag^(+) rarr Cu^(2+) + 2Ag`
Hence, 1 M `AgNO_(3)` solution cannot be stirred with a copper spoon.
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A copper-silver cell is set up. The copper ion concentration in it is 0.10 M. The concentration of silver ions is not known. The cell potential measured is 0.422 V. Determine the concentration of silver ions in the cell. [Given E_(Ag^(+)//Ag)^(@)=0.80,E_(Cu^(2+)//Cu)^(@)=+0.34 V]