Question

An electric current of $100$ ampere is passed through a molten liquid of sodium chloride for $5$ hours. Calculate the volume of chlorine gas liberated at the electrode at $NTP$.

Answer 1

The reaction taking place at anode is :
$2C{l}^{-}\to C{l}_2+2e^{-}$
Q=I*t = 100*5*60*60 coulumb
The amount of chlorine liberated by passing 100*5*60*60 coulumb of electric charge =$\frac{1}{2\ast 96500}$*100*5*60*60 = 9.3264 mole
Volume of $C{l}_2$ liberated at NTP = 9.3264*22.4 = 208.91L.