Question

For an isothermal process, the work done by or on a system of ideal gas is equal to the change in what?
A. The work done is equal to the change in internal energy.
B.The work done is equal to the change in heat energy.
C.The work done is equal to change in entropy.
D.The work done is equal to the change in pressure.

Answer 1

the work done is equal to the change in heat energy

Answer 2

For an isothermal process, the work done by or on a system of ideal gas is equal to the change in heat energy. The correct option is B.

What is isothermal process?

The process in which the temperature remains constant and other physical quantities are variable, is called the isothermal process.

From the first law of thermodynamics, the work done is the difference between heat supplied and change in internal energy of the system.

W = ΔQ - ΔU

For isothermal process, change in internal energy will be zero.

So, work done is equal to  the change in heat energy.

Thus, the correct option is B.

Learn more about isothermal process.

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