Question

74.5g of metal chloride contains 35.5g of chlorine. the equivalent weight of metal is

Answer 1

let the compound be MClx
MClx⇒$M^{+x}$ + $Cl^{-1}$
chlorine can take up only one electron 
therefore its valency is 1
but in the compound only 35.5g of Cl is there i.e. one mole of Cl(x=1)       
and mass of M is =74.5-35.5=39
39 is molecular mass of K 
so M is K