In the extraction of chlorine from brine _____________.
The following reaction takes place during extraction of chlorine from brine
2Cl– (aq) + 2H2O(l) → 2OH– (aq) + H2(g) + Cl2(g)
The 
for this reaction is +422kJmol-1. Using the formula
, 
= -nF
Where, 
is the Gibb’s free energy
n is the number of moles
F is Faraday’s constant
is the electrode potential
Putting the values in the above formula, we get
=-
=-2.2V
Therefore, 
for the overall reaction is positive and 
for overall reaction has negative value.
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