Question

23. At constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with a
rise in temperature, due to
(IIT)
1) increases in average molecular speed
2) decreased no. of collisions amongst molecules
3) increase in molecular attractions
4) decrease in mean free path
24. Density of neon will be highest at
(IIT)
1) STP
2) 0°C, 2atm
3) 273°C, latm
4) 273°C, 2atm
25. One litre of a gas weights 2g at 300 K and latm. pressure. If the pressure is made 0.75 atm, at which
temperature will one litre of the same gas weighs 1g
1) 600K
2) 800K
3) 900K
4) 450K




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Answer 1

Answer:

Pressure on the walls of the container is equal to the change of momentum per unit time per unit area. At constant volume, for a fixed number of moles of a gas, the pressure increases with rise in temperature due to increase in average molecular speed. This increases the change in momentum during collisions.

Explanation:

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