periodic table\nwhich expression can be used to represent an equivalence of heat of vaporization?\na. $delta…

periodic table\nwhich expression can be used to represent an equivalence of heat of vaporization?\na. $delta h_{vap}=delta h_{fus}$\nb. $delta h_{vap}=delta h_{cond}$\nc. $delta h_{vap}=-delta h_{fus}$\nd. $delta h_{vap}=-delta h_{cond}$

periodic table\nwhich expression can be used to represent an equivalence of heat of vaporization?\na. $delta h_{vap}=delta h_{fus}$\nb. $delta h_{vap}=delta h_{cond}$\nc. $delta h_{vap}=-delta h_{fus}$\nd. $delta h_{vap}=-delta h_{cond}$

Answer

Explanation:

Step1: Recall heat - change definitions

Heat of vaporization ($\Delta H_{vap}$) is the heat required to convert a liquid to a gas. Heat of condensation ($\Delta H_{cond}$) is the heat released when a gas changes to a liquid.

Step2: Determine the relationship

The processes of vaporization and condensation are opposite. The amount of heat absorbed during vaporization is equal in magnitude but opposite in sign to the heat released during condensation. So, $\Delta H_{vap}=-\Delta H_{cond}$.

Answer:

D. $\Delta H_{vap}=-\Delta H_{cond}$