Question

An open vessel containing air is heated from 300 K to
400 K. The fraction of air originally present which goes
out of it is at 400 K ?​

Answer 1

Answer:

As the vessel is open the pressure remains constant and there is no change in the volume of vessel. Hence volume also constant.According to ideal gas equationPV=nRT n1 =1 T1 =300k, T2=400 k n2=? P1V1=n1 RT1 , P2 V2=n2RT n1/n2= T2/T1 1/n2 =400/300 n2=3/4 The fraction of air present in vessel after heating n2=3/4 The fraction of air which goes out of the vessel =1-3/4=1/4