A system under constant external pressure undergoes a decrease in volume.What is the effect on the surroundings?
A)Energy is transferred as pressure-volume work done by the surroundings on the system.
B)Energy is transferred as pressure-volume work done on the surroundings.
C)Energy is transferred as heat from the system to the surroundings.
D)Energy is transferred as heat from the surroundings to the system.
E)None of the above.

Question

Quizplus · Accepted Answer

When the system undergoes a decrease in volume under constant external pressure, energy is transferred as pressure-volume work done by the surroundings on the system. This means that the surroundings do work on the system, causing the decrease in volume, and transfer energy to the system in the form of work. This work is pressure-volume work because the volume is changing due to pressure, and the pressure is constant. Therefore, the best choice is A.

A System Under Constant External Pressure Undergoes a Decrease in Volume.What