For the disproportionation reaction 2Cu+aq⇌CuS+Cu2+aq at 298 K, In K (where K is the equilibrium constant) is ___________×10−1 Given(ECu2+/Cu+0=0.16VECu+/Cu0=0.52V RTF=0.025)

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answer is 144.

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Detailed Solution

2Cu+⇌Cus+Cu+2aq Ecell0=ECu+|Cu0+ECu+|Cu+20=0.52+−0.16=0.36V Ecell0=RTnFlnK 0.36=0.0251lnK ⇒lnK=14.4=144×10−1 ∴Ans is 144

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