Which one of the following statement is not true about the effect of an increase in temperature on the distribution of molecular speed of gas ? .

Options

A. The area under the distribution curve remains the same as under the lower temperature.
B. The distribution becomes broader.
C. The most probable speed increases.
D. The fraction of the molecules with the most probable speed increases.

Answer

D

Explanation

To peak of the distribution curve corresponds to the most probable speed. We can notice that with increase in temperature , the fraction of the molecules with the most probable speed decreases as the graph becomes broader.