Question

Due to which of the following reason perfumes are made up of volatile liquids?

• A. Liquid droplets can rapidly convert to liquid and diffuse faster in air.
• B. Liquid droplets can rapidly convert to gas and diffuse slowly.
• C. Liquid droplets can rapidly convert to vapour and diffuse faster.
• D. Liquid droplets can rapidly convert to liquid and diffuse slowly in air.

Answer 1

The correct option is C

Liquid droplets can rapidly convert to vapour and diffuse faster.

Volatility is the tendency of liquid molecules to move into the vapour (gas) phase. Perfume needs to be made of volatile ingredients so that when they're sprayed, liquid droplets can rapidly convert to vapour and diffuse faster. (Gas molecules have greater kinetic energy to do this than liquid).