Question

For an ideal gas isobaric process at pressure 1 Pa, the volume of the gas changes from 1 m^3 to 5 m^3, what is the work done by the gas?

(a) 1 J

(b) 4 J

(c) 5 J

(d) 10 J

I have been asked this question in an interview for job.

I want to ask this question from Simplifications of General Energy Balance in chapter Application of Energy Balances in the Absence of Chemical Reactions and Energy Balances: How to Account for Chemical Reaction of Basic Chemical Engineering

Answer 1

Correct answer is (b) 4 J

The explanation is: W = P∆V = 1*(5 – 1) = 4 J.