Ask a Doubt
Request a call back

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

NEET Class neet Answered

What is the composition of the vapour which is in equilibrium at 30 degree celcius with a benzene-toluene solution with a mole fraction of benzene of 0.400? (P0 B is 119 torr and P0 T is 37 torr)       (a) 1.237  (b) 2.237  (c) 3.237  (d) 0.237
Asked by Balbir | 28 Jul, 2019, 07:59: PM
answered-by-expert Expert Answer
Q. What is the composition of the toluene  vapour which is in equilibrium at 30 degree celcius with a benzene-toluene solution with a mole fraction of benzene of 0.400? (P0 B is 119 torr and P0 T is 37 torr)  

Given:
 
T = 30 °C
 
PB0 = 119 torr
PT0 = 37 torr
PT  = XT PT0 
Mole fraction of benzene = 0.4
 
Mole fraction of ttoluene = 1 - 0.4
 
= 0.6
 
According to Raoult's law,
 
PB = XBP0 
PT  = XT PT0 
 
Total pressue = PB + PT  ---(1)
 
By putting values in eq (1)
 
PTot = XBPB0 + XT PT0 
 
       = (0.4 × 119) +  (0.6×37)
 
       = 69.8  torr
 
Mole fraction of toluene in vapour phase
 
straight P subscript 0 space end subscript straight X subscript straight T equals straight X subscript straight T subscript vap straight P subscript straight T straight X subscript straight T subscript vap space equals space fraction numerator straight P subscript 0 space end subscript straight X subscript straight T over denominator straight P subscript straight T end fraction equals space fraction numerator 37 cross times 0.6 over denominator 69.8 end fraction equals space 0.31 

 

Answered by Varsha | 28 Jul, 2019, 11:57: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
NEET neet - Chemistry
solutions
question image
Asked by 8239682116rahul | 10 Apr, 2024, 01:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
The specific conductance of N/10 kcl solution at 20°C is 0.0212ohm–1 cm–1 and the resistance of the cell containing this solution at 20°C is 55ohm the cell constant
Asked by ramadevisupriya5678 | 28 Mar, 2024, 02:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
physics
question image
Asked by kavyamodi237 | 11 Jul, 2022, 06:26: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
Why vacuum pump is inserted in the final collecting beaker and not in the first flask (in which the two liquids are present initially) in distillation under reduced pressure process?
Asked by myindiaisbad | 17 Jun, 2022, 11:17: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
chemistry
question image
Asked by bhaveshkaria31 | 30 May, 2022, 09:26: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
the boiling point of 0.15 molar aqueous solution of an unknown solute is 373.23 K at 1 atm . The molal elevatio constant of water is ______ K kg mol ^(-1)
Asked by rautganesh2255 | 01 Jul, 2021, 09:32: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
show that total vapour pressure over the solution of two liquids 1&2 at a particular temperature varies linearly with the mole fraction of a components
Asked by NituBarman192 | 01 Jun, 2021, 10:22: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
What is the solution sir ?
question image
Asked by bhagirathdangi12345 | 12 Feb, 2021, 01:42: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
Please explain this
question image
Asked by akashmanu09 | 08 Jan, 2021, 10:21: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Chemistry
What are protic and aproticsolutions 
Asked by arnavvidudala20050 | 17 May, 2020, 03:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×