The quantity of charge required to obtain $2$ moles of aluminium from $Al_2O_3$ is: (in $F$)

The Avogadro's number is $6 \times 10^{23} \ \text{mol}^{-1}$ and the electronic charge is $1.6 \times 10^{-19} \ \text{C}$. The Faraday's constant $(F)$ is given by:

The quantity of electricity required for the complete electrolysis of $2 \ mol$ of $Na^{+}$ is = ....... Coulombs.

To deposit a silver layer of thickness $5 \times 10^{-3} \ cm$ on a surface area of $80 \ cm^2$ (density $= 10.5 \ g \ cm^{-3}$),a current of $3 \ A$ is passed through a silver nitrate solution for ......... $sec$.

If $5 \ A$ of current is passed for $193 \ s$ through a solution containing $Cu$ salt,$0.32 \ g$ of copper is deposited. What is the oxidation state of the $Cu$ in the salt?

Faraday has the dimensions of