Question

During the electrolysis of a concentrated brine solution. Calculate the moles of chlorine gas produced by the passage of $4F$ electricity.

Answer 1

The reaction for the production of chlorine at positive electrode is as given below.
$2C{l}^{-}\to C{l}_2+2e^{-}$
Thus one mole of chlorine is obtained by the passage of 2F of electricity.
Hence, the passage of 4F of electricity will result in production of 2 moles of chlorine.