Homework Help: chemistry

Posted by Anonymous on Sunday, July 10, 2011 at 5:05am.

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

chemistry - DrBob222, Sunday, July 10, 2011 at 2:02pm
I'm not sure I understand the problem. I interpret this problem as unmixed. If that is true, then you want
Pa = Xa*P_oa = Xa*500
Pb = Xb*P_ob = 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.

Answer this Question

Related Questions

Math 156 - The systolic blood pressures of the patients at a hospital are ...
chemistry - A typical air sample in the lings contains oxygen at 100 mm Hg, ...
chemistry - please can someone help me with these questions? 24) Which ...
Chemistry help - The vapor pressure of an organic solvent is 50 mm Hg at 25°...
chemistry - The vapor pressure of an organic solvent is 50 mm Hg at 25°C ...
chemistry - what is the total pressure in a gas mixture of 100 mm hg O2, 820 mm ...
chemistry - what is the total pressure in a gas mixture of 100 mm hg O2, 820 mm ...
CHemistry - The vapor pressure of an organic solvent is 50 mm Hg at 25°C and...
Chemistry - In which pair(s) would boiling occur? (Each pair corresponds to one ...
chemistry - The total pressure in a flask containing air and ethanol at 25.7C is...

For Further Reading

First Name:
School Subject:
Answer: