Question

the tank of an air compressor contains gas at normal atmospheric pressure (1 atm) if the compressor motor pumps the equivalent of three extra tanks of air into the compressor tank, what will be the final pressure?

Answer 1

pv = nrt
here volume of tank remains constant and number of moles increases
therefore p α n
let initial number of moles be n. the pump pumps 3n into the tank
total no of moles = 4n
p/n = Pₓ/4n
Pₓ = 4 p