The density of a gas at `27^(@)C` and 1 atm is d. At what temperature would its density be 0.75d, if the pressure is kept constant?

Options

A. `20^(@)C`
B. `30^(@)C`
C. 400K
D. 300K

Answer

C

Explanation

`1 xx M_(0) = d xx R xx 300`, Now `1 xx M_(0) = 0.75d xx R xx T rArr d xx 300 = 0.75 d xx T`
`rArr T = (300)/(0.75) = 400K`