74.5 g of a metallic chloride contains 35.5 gm of chlorine,The equivalent weight of metal is:
Mass of metal = 74.5-35.5 = 39 g
Valency of metal = 1
Eq.wt=Molecular mass/n-factor
as there is only one Cl atom in the molecule
Atomic mass of metal = 39g
Equivalent weight = 39g /1 = 39