Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

solution of 2 volatile liquids A and B obey raoult's law at a certain temp. Its found that the total V.P of above two is 400mm of hg.The mole fraction of A in vapour phase is 0.45 and in liquid phase is 0.65 Then calculate V.P of pure liqiud A and B at the same temp.
Asked by banga71 | 17 May, 2017, 09:43: PM
answered-by-expert Expert Answer
According to Dalton's Law of Partial Pressures, partial Pressure of each component gas is proportional to their mole fractions in the vapour. 
 
 
Hence,
Partial Pressure of A = Pa = 400×0.45 = 180 
Pb = 400×(1-0.45) = 220 

Also, Partial Pressure of the gas in the vapour = (Vapour Pressure) × (Mole Fraction of Liquid in solution) 
Hence,
Vapour Pressure of A = Va = 180/0.65 ≈ 277 
Vb = 220/(1-0.65) ≈ 629 
Answered by Prachi Sawant | 18 May, 2017, 10:30: AM
CBSE 12-science - Chemistry
Asked by sagarmishra | 27 Feb, 2024, 04:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by ayazanwarneet | 03 Jan, 2023, 10:58: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by gopirammeghwal78 | 05 Aug, 2021, 08:18: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by msambyal307 | 30 May, 2021, 02:03: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by nishchaymakhija115 | 11 Sep, 2019, 02:31: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by rakeshraghav33 | 18 Sep, 2018, 04:22: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by Avadhut Katkar | 14 Sep, 2018, 12:37: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by minipkda | 21 May, 2018, 10:19: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
Asked by Topperlearning User | 20 Jun, 2016, 04:00: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×