Question

7. Vapour density of a gas having formula (CO)x, is 70.
Find out x

(1) 3.5
(2) 4.5
(3) 5
(4) 6​

Answer 1

Explanation:

answer is 5 because

molecular weight =2 X vapour density

2 X 70=140

now mol. mass of (co)x is

(12+16)x= 28x

28x = 140

x=5