Question

0.24 g of a volatile gas, upon vaporization gives 45 ml vapor at NTP. Find the vapour density of substance when density of Hydrogen(h2) is 0.089?

Answer 1

Explanation:

0.24 g of a volatile substance gives 45 ml at STP.

22400 ml (or 1 mole) at STP will give

45

0.24

×22400=119.47 g.

The vapour density is one half the molecular weight.

Vapour density =

2

Mol. wt.

=

2

119.47

=59.73.

Hence, the correct option is B