1.

E^(@) for two reactions are given below : Cr^(+3) + 3e^(-) to Cr , E^(@) = - 0.74 V Ocl^(-) + H_2O + 2e^(-) to Cl^(-) + 2OH^(-) , 2OH , E^(@) = 0.94 V What will be the E^(@) for 3OCl^(-) + 2Cr + 3H_2O to 2Cr^(+3) + 3Cl^(-) + 6OH^(-)

Answer»

`-1.68 V `
`1.68 V `
`-0.20 V `
`+ 0.20 V `

SOLUTION :` 2 XX 3 xx E^(0) = -(-0.74 xx 3 xx 2) + (0.94 xx 2 xx 3) , E^(0) = 0.74 + 0.94 = 1.68V`


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