Question

Which gas can be liquified most readily? a)NH3 b)Cl2 c)SO2 d)CO2 Answer is SO2. I asked this question and expert replied that van der waals force of attraction are strongest in SO2. But how do I know this? Cl2 has the maximum mass then it must also have strong force of attraction?

Answer 1

so2.because this gas will have lower vapour pressure anď lower moleculer weight

Answer 2

correct answer is SO2. .