Question

A gas has a vapour density 11.2. The volume occupied by gram of the gas at STP will be:
A. 11.2 L
B. 22.4 L
C. 1 L
D. 10 L

Answer 1

Correct Answer - C
Number of moles `= ("Mass")/("Molar mass")`
`= ("Mass")/(2 xx " Vapour density")`
`= (1)/(2 xx 11.2) = (1)/(22.4)`
Volume of gas `= n xx 22.4 L`
`= (1)/(22.4) xx 22.4 L = 1L`