what is n factor of mohr's salt how to calculate it explain in detail please

Dear student,

n-factor is the just the number of electrons supplied/ reacted with one mole of the substance. 
Mohr's salt is - FeSO4.(NH4)2SO4.6H2O.
In Mohr's salt Fe is in +2 state (Fe2+) , it oxidises by removing 1 electron and converts to Fe3+.
Fe2+ Fe3+ + e-
Therefore n- factor = 1. ( 1 electron is removed per mole of Mohr's salt).

Regards

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