Question

The equivalent mass of ferrous oxalate is
(a) molar mass of ferrous oxalate / 1
(b) molar mass of ferrous oxalate / 2
(c) molar mass of ferrous oxalate / 3
(d) none of these

Answer 1

Answer is Option (b). 

Solution is given below, 
Molar Mass of the Ferrous Oxalate (FeC₂O₄)  = 56 + 12 × 2 + 16 × 4
= 56 + 24 + 64
= 120 + 24
= 144 g.

Since, Ferrous Oxalate is the Salt, therefore, its equivalent mass will be equal to the ratio of the molar mass to the total valency of the metal in the salt.

∴ Total Valency of the Metal (Fe) in the Salt is 2.

Therefore,
Its equivalent mass = Molar mass of the Ferrous Oxalate/Total Valency of the Iron.
= 144/2
= 72 

We can see that the Equivalent mass is 1/2 of the Molar mass. Thus, Option (b) is correct. 



I hope it will helps you.