Which among the following is true for the reactions involving only solids or liquids?

Which among the following is true for the reactions involving only solids or liquids?
  1. $\Delta \mathrm{H}>\Delta \mathrm{U}$
  2. $\Delta \mathrm{H}=\Delta \mathrm{U}$
  3. $\Delta \mathrm{H}<\Delta \mathrm{U}$
  4. $\Delta \mathrm{H}=\Delta \mathrm{U}-\Delta \mathrm{nRT}$

Solution

For solids or liquids $\begin{aligned} & \Delta \mathrm{n}=0 \\ & \Delta \mathrm{H}=\Delta \mathrm{U}\end{aligned}$

Asked in: MHT CET 2022 (07 Aug Shift 1)

Practice more Thermodynamics (C) questions on Aicharya