Question

Number of Faraday required to get $1g$ atom of $Mg$ from $Mg{Cl}_2$ is:

• A. $0.0035F$
• B. $2F$
• C. $1F$
• D. $0.2F$

Answer 1

The correct option is B $2F$

$M{g}^{2+}+2e^{-}\to Mg$

1 g atom (or 1 mole) of Mg requires 2 moles of electrons. The number of moles of electrons is equal to the number of Faradays.

Number of Faraday required to get $1g$ atom of $Mg$ from $Mg{Cl}_2$ is $2F$.