

Stoichiometry - Engineering
Q1: At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature.A varies linearly
B increases
C decreases
D does not vary
ANS:B - increases At higher temperatures, molal heat capacities for most gases (at constant pressure) increase with an increase in temperature. This increase in heat capacity occurs due to the additional degrees of freedom available to gas molecules at higher temperatures, allowing them to absorb more energy per degree of temperature rise. As the temperature of a gas increases, its molal heat capacity tends to increase as well. This phenomenon can be explained by considering the behavior of gas molecules at higher temperatures.
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