Question

In: Physics

Which of these increases the average kinetic energy of the molecules in an ideal gas? (a) Reducing the volume, keeping P and N constant (b) Increasing the volume, keeping P and N constant

Which of these increases the average kinetic energy of the molecules in an ideal gas? 

(a) Reducing the volume, keeping P and N constant 

(b) Increasing the volume, keeping P and N constant 

(c) Reducing the volume, keeping T and N constant 

(d) Increasing the pressure, keeping T and V constant 

(e) Increasing N, keeping V and T constant

Solutions

Expert Solution

The option (b) is right option.

 

Explanation:

The average kinetic energy is given as

(Ktr) = 3/2 ∙ PV/N

Or = 3/2 kT

 

The numerator terms should increase to increase the average kinetic energy. Either pressure or volume or both should increase to increase (Ktr).

 

Hence, the option (b) is correct.

Option (b) is correct.

Junaid answered 1 year ago
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