Determine the equilibrium constant, Keq, at 25°C for the reaction 2Br- (aq) + I2(s) <--> Br2(l) + 2I- (aq)

Eocell = (0.0257/n) lnKeq, Calculate Eocell from Use this equation to calculate K value.

Eo (I2/I-) = +0.53, Eo (Br2/Br-) = +1.07,

Explanation:

The given chemical reaction is:

The relation between Eo cell and Keq is shown below:

The value of Eo cell is:

Br- undergoes oxidation and I2 undergoes reduction.

Reduction takes place at cathode.

Oxidation takes place at anode.

Hence,

F=96485 C/mol

n=2 mol

R=8.314 J.K-1.mol-1

T=298K

Substitute all these values in the above formula:

Keq=6.13x10^33

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