Question

Vapour density of metal chloride is 77 Equivalent weight of metal is 3 then the atomic weight will be

Answer 1

Vapour density of metal chloride is 77, so its molecular weight is 154

Now let us assume that there are 4 chlorine atoms in the metal chloride(MCl₄),
then the total weight of chlorine in the compound is 4 x 35.5 = 142

therefore the weight of metal in the compound is 154 - 142 = 12

now, n-factor of metal is 4(as there are 4 chlorine atoms in its compound)

Hence the Equivalent weight of the metal is 12/4  = 3(as given)

Therefore since our assumption is satisfying the condition that equivalent weight of metal is 3, our assumption (MCl₄) is correct.

The atomic weight of the metal is 12

Answer 2

it is the answer of the question