Which of the following eations is correct for heat of sublimation?

Which of the following eations is correct for heat of sublimation?
  1. $\Delta_{\text {vap }} \mathrm{H}=\Delta_{\text {sub }} \mathrm{H}+\Delta_{\text {fus }} \mathrm{H}$
  2. $\Delta_{\text {sub }} \mathrm{H}=\Delta_{\text {fus }} \mathrm{H}-\Delta_{\text {vap }} \mathrm{H}$
  3. $\Delta_{\text {fus }} \mathrm{H}=\Delta_{\text {sub }} \mathrm{H} \times \Delta_{\text {vap }} \mathrm{H}$
  4. $\Delta_{\text {sub }} \mathrm{H}=\Delta_{\text {fus }} \mathrm{H}+\Delta_{\text {vap }} \mathrm{H}$

Solution

The correct equation for the heat of sublimation is: $\Delta_{\text {sub }} H=\Delta_{\text {fus }} H+\Delta_{\text {vap }} H$ Where: - $\Delta_{\text {sub }} H$ is the heat of sublimation, - $\Delta_{\text {fus }} H$ is the heat of fusion, - $\Delta_{\text {vap }} H$ is the heat of vaporization.

Asked in: MHT CET 2020 (12 Oct Shift 2)

Practice more Thermodynamics (C) questions on Aicharya