Question

12gm of an unknown gas exerts 2 atm pressure ,in a container of volume 5 dm3 at 227°C then calculate molar mass of unknown gas.​

Answer 1

Answer:

As the volume is constant, pressure law can be applied, that is :

P2P1=T2T1

1.11=t+283t+273

t=−173∘C=100 K

Now, applying gas equation,

PV=nRT

or V=PnRT=120×112×0.082×100=0.82 litre