wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

At 300 K, the vapour pressure of an ideal solution containing 3 mole of A and 2 mole of B is 600 torr. At the same temperature, if 1.5 mole of A and 0.5 mole of C (non-volatile) are added to this solution the vapour pressure of solution increases by 30 torr. What is the value of p0B?

A
940
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
405
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
90
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
None of these
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is D 90
P=p0AXA+p0BXB
600=p0A(33+2)+p0B(22+3);
3p0A+2p0B=3000
630=p0A(4.54.5+2+0.5)+p0B(24.5+2+0.5)
4.5p0A+2p0B=4410
1.5p0A=1410;p0A=940 and p0B=90

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Liquids in Liquids and Raoult's Law
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon