JEE Main & Advanced Chemistry Electrochemistry / विद्युत् रसायन Question Bank Topic Test - Electrochemistry

\[Zn|Z{{n}^{+2}}({{C}_{1}})||Z{{n}^{+2}}({{C}_{2}})|Zn\] For this cell \[\Delta G\] is negative if

A) \[{{C}_{1}}={{C}_{2}}\]

B) \[{{C}_{1}}>{{C}_{2}}\]

C) \[{{C}_{2}}>{{C}_{1}}\]

D) Both [a] and [c] are correct

Correct Answer: C

Solution :

[c] \[Zn|Z{{n}^{+}}({{C}_{1}})||Z{{n}^{+2}}({{C}_{2}})|Zn\]

\[\therefore \] \[{{E}_{Cell}}=-\frac{0.0591}{2}\log \frac{{{C}_{1}}}{{{C}_{2}}}\]

For \[\Delta G\] being negative, \[{{E}_{Cell}}\] should be positive.

\[\therefore \] \[{{C}_{2}}>{{C}_{1}}\]