All isothermal processes are necessarily internally reversibleQuestion 5Select one:a.TRUEb.FALSE

Step 1: Break Down the Problem

We need to determine whether all isothermal processes are necessarily internally reversible. This involves understanding the definitions of isothermal processes and internal reversibility.

Step 2: Relevant Concepts

1. Isothermal Process: A process that occurs at constant temperature. During an isothermal process for an ideal gas, the internal energy remains constant.
2. Internally Reversible Process: A process that can be reversed without any change in the system and surroundings. It means that all intermediate states of the system can be maintained in equilibrium.

Step 3: Analysis and Detail

• An isothermal process can be carried out slowly enough to be in internal equilibrium, thus can be reversible.
• However, if an isothermal process occurs abruptly or with significant friction or other irreversibilities, it becomes irreversible.
• Therefore, not all isothermal processes are necessarily internally reversible; there can be irreversibility present due to non-equilibrium conditions.

Step 4: Verify and Summarize

Since an isothermal process can be either reversible or irreversible depending on the details of the process, we conclude that the statement is false.

Final Answer

b. FALSE