Question

The graph given below shows the P-V plot for a process on an ideal gas. Select the correct statement.

• A. Enthalpy content of the gas is constantly increasing and the process is carried out slowly.
• B. Enthalpy content of the gas first increases then decreases and the process is quasistatic.
• C. All are correct
• D. None

Answer 1

The correct option is A Enthalpy content of the gas is constantly increasing and the process is carried out slowly.

$H=U+PV$

when $P$ & $V$ increase enthalpy also increases & vice-versa.

In the given $P-V$ graph, $P$ & $V$ increase so enthalpy also increases from $A$ to $B$.