Chemistry
Grade-9
Easy
Question
At a constant volume of a gas, for a fixed number of moles, the pressure of the gas increases with an increase in temperature; this is due to:
- Increase the average molecular speed
- Increase the number of particles
- Increase in the kinetic energy
- Increase in the intermolecular attractions
Hint:
Molecular speed increases pressure increases.
The correct answer is: Increase the average molecular speed
We know,
PV = nRT
V is constant, n is constant, P increases T also increases. P increases number of collisions increases. This is due to increase the average molecular speed.
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