Question

Use the kinetic molecular theory to explain why:

-Gases can be compressed much more than liquids or solids.

-A blood sample to be analyzed for ammonia gas must be cooled immediately after the blood is drawn from the patient.

Answer 1

Ans (a) The kinetic molecular theory tells us that particles if gases are so small that maximum distance between them is free space and these particles are negligible in comparison to the spaces between them. Hence as the gases particles have free space so they can come more and more close to each other without any resistance and which results high compresibility of gases which is less in liquid and more less in solid as compared to gases.

Ans(b) A blood sample to be analyzed for ammonia gas must be cool immediately after the blood is drawn from the patient because ammonia is not present in healthy person it is only present in an unhealthy person hence ammonia doesn't have a binding property with blood so according to kinetic molecular theory which tells that kinetic energy of gases is proportional to temperature. Hence when blood is drawn from patient if it gets the outer atmosphere contact it's temperature increase so the ammonia which is being tested will get removed before the testing. Hence immediate cooling is necessary