Question

41. Helium gas is present in a 100 L container at 27°C
and collision frequency (z11) is x unit. At same
temperature, volume is reduced such that collision
frequency becomes 4x unit. What is the difference
in volume of helium gas in initial state and final
state in litre (only magnitude)?
ANS-50​

Answer 1

Answer:

from ideal gas equation, PV = nRT

So, T=

nR

PV

Since, n is constant, and R is also constant, we can say that T is directly proportional to the product of P and V

TαPV

Since both volume and pressure are doubled, absolute temperature of the gas will become 4 times

Initial temperature = 27

∘

C = 300K

So, final temperature = 4 x 300K = 1200 K = 927

∘

C

So, B is the correct answer