A 2-mol ideal gas system undergoes an adiabatic process where it expands and does 20 J of work on its environment.How much heat is received by the system?
A)−20 J
B)zero
C)+10 J
D)+20 J
E)−10 J

Question

A 2-mol ideal gas system undergoes an adiabatic process where it expands and does 20 J of work on its environment.How much heat is received by the system?
A)−20 J
B)zero
C)+10 J
D)+20 J
E)​−10 J

Quizplus · Accepted Answer

In an adiabatic process, the change in internal energy of the system is equal to the work done on or by the system. Since the system does work on its environment (expands), its internal energy decreases by 20 J. Since it is an adiabatic process, no heat is exchanged between the system and its environment. Therefore, the heat received by the system is zero (option B).

A 2-Mol Ideal Gas System Undergoes an Adiabatic Process Where