Chemistry - Electrochemistry Question with Solution | TestHub

A battery is constructed of $\mathrm{Cr}$ and ${\mathrm{Na}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$. The unbalanced chemical equation when such a battery discharges is following: $${\mathrm{Na}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7+\mathrm{Cr}+{\mathrm{H}}^{+}\to {\mathrm{Cr}}^{3+}+{\mathrm{H}}_2\mathrm{O}+{\mathrm{Na}}^{+}$$ If one Faraday of electricity is passed through the battery during the charging, the number of moles of ${\mathrm{Cr}}^{3+}$ removed from the solution is