Question

find the N factor of H3PO4 H3PO2 H3PO3

Answer 1

For finding the n factor, we use the disproportionation reactions and use the tricks for finding equivalent mass E=E1+E2.

The n factor should be measured in oxidation number per module and then equivalent mass=molar mass/n-factor.

So, it changes the state from +1 and n-factor is 4 and H3Po2 changes in H3PO4 oxidation states changes. Therefore n-factor is m/2