Cosoder the reactopm: `(T = 298 K)`
`Cl_2 (g) + 2 BR^(-) (aq) rarr 2 Cl^(-) (aq) + Br_2 (aq.)`
The emf of he cell, when `[Cl^(-) = (Br_2] = [Br^(-) ] = 0.01M and Cl_2 ` gas is at `1` atm pressure, will be :
(`E^@` for the above reaction is `= 29` volt ).

Options

A. `0.54` volt
B. `0.35` volt
C. `0.24` volt
D. `-0.29` volt

Answer

B

Explanation

`E_("cell")= 0.29 - (0.0591)/(2) "log" ([Cl^(-)]^(2)[Br_(2)])/([Br^(-)]^(2)[Cl_(2)])`
`= 0.29 - (0.0591)/(2) "log" ([10^(-2)]^(2)[10^(-2)])/([10^(-2)]^(2)[1])`
`0.29 + (0.0591)/(2)xx2=0.349~~ 0.35 V`