1.

The value of the reaction quotient, Q, for the cell: `Ni(s)|Ni^(2+)(0.9M)||Cl^(-)(0.40M)|Cl_(2)(g0.10"atm"),Pt(s)` isA. `1.3xx10^(-1)`B. `8.0xx10^(-2)`C. `3.0xx10^(-1)`D. `3.0xx10^(-2)`

Answer» Correct Answer - c
The half cell reaction and overall recation are
`Ni rarrNi^(2+)+2e^(-)`
`Cl_(2)+2e^(-)rarr2Cl^(-)`
`NirarrNi^(2+)+2Cl^(-)`
`therefore Q([Ni^(2+)][Cl^(-)](2))/([pCl_(2)])`
`=(0.19xx(0.4)^(4))/(0.1)=0.304`
`=3.04xx10^(-1)`


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