# chemistry

2 liquids a and b have vapour pressure of 500 mm hg and 200 mm hg .calculate mole fraction of a at which 2 liquids have equal partial pressure

1. 👍 0
2. 👎 0
3. 👁 257
1. I'm not sure I understand the problem. I interpret this problem as unmixed. If that is true, then you want
Pa = Xa*Poa = Xa*500
Pb = Xb*Pob = Xb*200 and since Pa = Pb, then
Xa*500 = Xb*200
Xa + Xb = 1 and solve for Xa and Xb. I get something like 143 mm Hg but that is approximate. Let me know if this is not the correct interpretation.

1. 👍 1
2. 👎 0
2. I also think so

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Chemistry

Vapour pressure of ideal solutions at 25c the vapour pressure of chloroform and carbon tetrachloride are 26.54 and 15.27 kpa respectively. If the liquids from ideal solutions. (A) what is the composition of the vapour in

asked by Munavvar on February 28, 2015
2. ### chemistry

Two liquids A and B on mixing form an ideal solution. The vapour pressure of the solution containing 2 moles of A and 4 moles of B is 0.2 atm. If the vapour pressure of pure A at a certain temperature is 0.3 atm then what will be

3. ### chemistry

Calculate the volume of solution that has a vapour pressure of 25.8 mbar and contains 200.3 g of galactose, C6H12O6, at a temperature of 22.0 °C. The vapour pressure of pure water at 22 °C is 26.40 mbar, the density of water is

asked by Jane Smith on June 5, 2015

Calculate the volume of solution that has a vapour pressure of 25.8 mbar and contains 200.3 g of galactose, C6H12O6, at a temperature of 22.0 °C. The vapour pressure of pure water at 22 °C is 26.40 mbar, the density of water is

asked by Ben on June 4, 2015
5. ### science

Calculate the volume of solution that has a vapour pressure of 25.8 mbar and contains 200.3 g of galactose, C6H12O6, at a temperature of 22.0 °C. The vapour pressure of pure water at 22 °C is 26.40 mbar, the density of water is

asked by Jane Smith on June 5, 2015
6. ### science

the vapour pressure of pure liquid benzene and toluene are 160mm and 60 mm repectively. calculate the vapour pressure of an equimolar solution at the same temperature?

asked by priyanka on January 23, 2015
7. ### PCB

A 298k the vapour pressure of water is 23.75mmhg.calculate the vapour pressure at same tempreature over 5% aqurous solution of urea?

asked by Chavi on April 24, 2017
8. ### Chemistry

Find molality of a solution containing non - volatile solute if its vapour pressure is 2% below the vapour pressure of pure water

asked by Jashan Gill on February 1, 2013
9. ### chem

at 40 degree C , the vapour pressure of water is 55.3 mm of hg. calculate the vapour pressure at same temp. of 10%aques solution of urea??

asked by niki on June 7, 2011
10. ### chemistry

water has a vapour pressure of 23.76 torr at 25C.what is the vapour pressure of a solution of sucrose ,if its mole fraction is 0.25?

asked by sumie on June 14, 2012

More Similar Questions