Chapter 15, Problem 71RPP

To determine

The reason for the less temperature change of humid air on condensation, with increased elevation from the options provided, if the temperature decreases by $10°\text{C}$

with an increase in height of $1000\text{ m}$

before condensation and the temperature decreases by $\text{5 }°\text{C}$

after condensation for the same elevation:

a. Its density increases, making it more difficult to change temperature.

b. Thermal energy released during the condensation causes less thermal energy change.

c. The gas expands less, causing less negative work.

d. The temperature of the surrounding air is changing less.