Question

The density of a gas at 27'c and 1 atm is d. pressure remaining constant, at which of the following temperature will its density become 0.75 d?
a) 20'c
b) 30'c
c) 400'c
d) 300 k

Answer 1

As we know that, PV = nRT

or PV = (m/M) RT

or PM = (m/V) RT = d RT

In condition (1): PV = d R 300

In condition (2): PV = 0.75d​ RT

Dividing condition (1) by (2), we get:

1 = (300)/0.75T

or T = 400 K

Hence, option (c) i.e. 400 K is the right answer.

Answer 2

Answer:

this is the answer to the question