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Question
According to Maxwell Boltzmann distributon of energy:
(i) the fraction of molecules with most probable kinetic energy decreases at higher temperatures.
(ii) the fraction of molecules with most probable kinetic energy increases at higher temperatures.
(iii) most probable kinetic energy increases at higher temperatures.
(iv) most probable kinetic energy decreases at higher temperatures.
Solution
(i) the fraction of molecules with most probable kinetic energy decreases at higher temperatures.
(iii) most probable kinetic energy increases at higher temperatures.
Explanation:
Distribution of kinetic energy may be described by plotting a graph of fraction of molecules versus kinetic energy.
Kinetic energy of maximum fraction of molecule is known as most probable kinetic energy. It is important to note that with increase of temperature, peak shifts forward but downward. This means that with increase of temperature
(i) Most probable kinetic energy increases.
(ii) the fractions of molecules possessing most probable kinetic energy decreases.
