Question

1)Calculate the density of chlorine, Cl₂ , in grams per litre (g L^-1) at 25 degrees Celcius and 0.850 atm.

R= 0.0821 L atm K^-1 mol^-1

M(Cl₂)= 70.91gmol^-1

(Please show two possible ways to do it)

2)Explain why the vapour pressure of a liquid depends on the intermolecular forces present?
My ans: weaker intermolecular forces=particles enter into vapour phase easier+higher vapour pressure.
(I only got 1 mark for this. It was worth 2. I failed to explain why) HELP!!

Answer 1

CHECK THE CALCULATIONS AND PAY ATTENTION TO THE UNIT ANALYSIS.