Q.
If two substances A and B have p∘A:p∘B=1:2 and mole fraction in solution = 1 : 2 then mole fraction of A in vapours is
see full answer
Start JEE / NEET / Foundation preparation at rupees 99/day !!
21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
0.33
b
0.25
c
0.52
d
0.2
answer is D.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
Mole fraction of component A in vapour phase = Partial pressure of A Total vapour pressure =pApA+pBBut pA=pA∘xA and pB=pB∘xB∴Mole fraction of A in vapour phase =pA∘xAp∘xA+pB∘xBGiven, pA∘=1,xA=1,pB∘=2,xB=2On substituting the values, we get Mole fraction of component A in vapour phase=1×11×1+2×2=11+4=15=0.2
Watch 3-min video & get full concept clarity