Question

When a gas filled in a closed vessel is heated by raising the temperature by 1ºC, its pressure increases by 0.4%. The initial temperature of the gas is _____ K.

Answer 1

PV = nRT

So,

$\frac{dp}{p}×100=\frac{dT}{T}×100$

$0.4=\frac{1}{T}×100$

⇒ T = 250 K