Question

Q. Monoatomic gases at the same temperature must have - (a) Same pressure (b) Same average molar kinetic energy (c) Same volume (d) Same van der Waal’s constants

Answer 1

Answer:

Monoatomic gas at the same temperature must have

a) same pressure is not possible as pressure depends on the atmosphere.

b) Same average molar kinetic energy is not possible to as it is equal to one half of the mass (m) of each gas molecule times the RMS speed (vrms) squared.

c) Same volume depends on pressure so not possible too.

d) So they will have same van der Waal's constant.

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Answer 2

Monoatomic gases at the same temperature must have  (b) Same average molar kinetic energy

• The average kinetic energy of any gas at the same temperature is equal for the molecules.
• The molecules in gas don't interfere greatly with each other in certain circumstances.
• The temperature of a gas is directly related to the average kinetic energy of the gas, it may be that when two gases are at a similar temperature, their molecules have the same average kinetic energy.