Question

What is the n-Factor of Mohr's salt?

Answer 1

n-factor:

• The n-factor of salts is defined as the number of moles of electrons lost/gained by $1$ mole of the salt.

n-factor of Mohr's salt:

• Ammonium iron $\left(\mathrm{II}\right)$ sulfate is an inorganic salt which is also known as Mohr's salt.
• The chemical formula for Mohr's salt is ${\left({\mathrm{NH}}_4\right)}_2\mathrm{Fe}{\left({\mathrm{SO}}_4\right)}_2{\left({\mathrm{H}}_2\mathrm{O}\right)}_6$.
• As Iron $\left(\mathrm{Fe}\right)$ is in +2 oxidation state i.e. $\left({\mathrm{Fe}}^{2+}\right)$, it oxidizes by removing $1$ electron and converts to ${\mathrm{Fe}}^{3+}$.
• Thus, the n-factor of Mohr's salt is $1$.