First slide

laws

Question

If the temperature of a gas is increased ,while keeping pressure constant, then the number of gas molecules per unit volume

Moderate

A

remains changed
B

increases
C

decreases
D

nothing can be said definitely

Solution

pressure=constant
we know that
$PV = μRT p = \frac{μRT}{V} P = x RT$
Where X is the number of gas molecules per unit Volume.
Now,
$T \propto \frac{1}{X}$
If the temperature of a gas is increased, then the number of gas molecules per unit volume decreases

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