2.5 L of a sample of a gas at `27^(@)C` and 1 bar pressure is compressed to a volume of 500 mL keeping the temperature constant, the precentage increase in the pressure is:

Options

A. 1
B. 4
C. 5
D. 0.8

Answer

B

Explanation

`P_(1)V_(1) = P_(2) V_(2)`
`1 xx 2.5 = P_(2) xx (1)/(2)`
`P_(2) = 5` bar
% Increase `= ("Increase in pressure")/("Initial pressure") xx 100`
`= (4)/(1) xx 100 = 400%`