Question

For an ideal gas isobaric process what is the work done by the gas from 2 m^3 to 0.5 m^3 at 2 Pa?

(a) -3 J

(b) 3 J

(c) -5 J

(d) 5 J

This question was posed to me in an online quiz.

This intriguing question originated from Simplifications of General Energy Balance in section 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

The correct answer is (a) -3 J

For explanation: Work done by the gas = 2*(0.5 – 2) = -3 J.