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Which of the following is the most reasonable explanation for a drop in temperature of gas?

A) a decrease in the volume of the container
B) a decrease in the average kinetic energy of the gas particles
C)an increase in the average potential energy of the gas particles
D) an increase in gas pressure

User AndrewJM
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2 Answers

4 votes
B) a decrease in the average kinetic energy of the gas particles
User Vinesh EG
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5 votes

Answer: The correct answer is option B.

Step-by-step explanation:

Average kinetic energy of the gas molecule is given by relation:


E_K=(3)/(2)(R)/(N_A)* T


N_A = Avogadro Number

T = Temperature of the gas in Kelvins.

R = Universal gas constant


E_K\propto T

With increase in temperature the kinetic energy of the gas molecule increases and vice-versa.

So, according to the question the explanation for a drop in temperature of the gas is decrease in average kinetic energy of the gas molecules.

Hence, the correct answer is option B.

User Arjun Tuli
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