Question

For which of the following processes, $q=\Delta U$ ?

• A. $O⟶A$
• B. $O⟶D$
• C. $O⟶B$
• D. $O⟶C$

Answer 1

Answer: (B)

The process at $O\to D$ completed at constant volume so $\Delta V=0$

as $W=P\Delta V=0,$ then $;\Delta U=q-W$

$\Rightarrow \Delta U=q-0=q$