Question

The vapour density of a metal chloride is 85. If equivalent weight of metal is 7.01, calculate the at.wt. of metal.

Answer 1

Let metal chloride be MCl_x , then 

Mol. wt. of MCl_x = a + 35.5 x, 

2 x 85 = E. x + 35. 5 (x)

x = 2 x 85/7.01 + 35.5 = 4

at. wt. = 7.01 x 4 = 28.04