Question

The order of volatility of liquids A,B,C,D is A > C > B > D. The order of their vapour pressure is:

• A. A
• B. B
• C. C
• D. D

Answer 1

Volatility is the tendency of a substance to vaporize.

The volatility of a liquid is directly related to its vapor pressure.

More volatile liquids have higher vapour pressure.

Now, volatility order is:
A > C > B > D

So, order of vapour pressure will be:
A > C > B > D