Potassium chlorate (KClO₃, Mol. wt. = 123) is manufactured by the oxidation of KCI at the anode in KOH. The efficiency of the process is 70 per cent. Current of 2 amperes was passed for 15 hours. Identify incorrect statements

(1) The number of e^- involved in the reaction are 6, the reaction being ${\mathrm{Cl}}^{-}+6{\mathrm{OH}}^{-}\to {\mathrm{ClO}}_3^{-}+3{\mathrm{H}}_2\mathrm{O}+6e^{-}$

(2) $\text{ Number of coulombs passed }=2\times 15\times 3600=1.08\times {10}^5$

$\text{ Actual coulombs used in the reaction }=\frac{1.08\times {10}^5\times 70}{100}=7.56\times {10}^4$

$\text{ Weight of }{\mathrm{KClO}}_3\text{ deposited }=\frac{7.56\times {10}^4\times 123}{6\times 96,500}=16\mathrm{gms}$

(3) If current efficiency is 100%, amount of KCIO₃ formed is $=\frac{1.08\times {10}^5\times 123}{6\times 96,500}=23\text{ gms. }$

(4) Number of e^- involved in the reaction $=\frac{7.56\times {10}^4}{96}\frac{\times 6\times {10}^{23}}{500}=4.7\times {10}^{23}$