Homework Help: Chemistry

Posted by Hannah on Sunday, February 19, 2012 at 9:10pm.

The vapor pressure of chloroform is 173.11 mm Hg at 25 degrees celsius. A nonvolatile, nonelectrolyte that dissolves in chloroform is aspirin. Calculate the vapor pressure of the solution at 25 degrees celsius when 6.243g of aspirin (180.1g/mol) are dissolved in 244.5g of chloroform.

Chloroform=119.40

I did 6.243g aspirin / 180.1g = 0.0346 moles

244.5g / 119.40g = 2.04 moles

Yes im sorry I am sort of confused. So is the total number of moles what they gave me in the problem, 6.243?

Chemistry - DrBob222, Sunday, February 19, 2012 at 9:28pm
No. They didn't give you that in the problem. How can 6.243 g be 6.243 moles. A mole is a mole. A gram is a gram.
This is basic stuff. You must have calculated moles a million times by now. mols = grams/molar mass.
Chemistry - Anonymous, Friday, May 18, 2012 at 6:39pm
The vapor pressure of liquid chloroform, CHCl3, is 400.0 torr at 24.1°C and 100.0 torr at -6.3°C. What is ΔHvap of chloroform?

Answer this Question

Related Questions

Chemistry - The vapor pressure of chloroform is 173.11 mm Hg at 25 degrees ...
Chemistry - The vapor pressure of chloroform is 173.11 mm Hg at 25 degrees ...
Chemistry(Please help) - The vapor pressure of chloroform is 173.11 mm Hg at 25...
Chemistry - The vapor pressure of diethyl ether is 463.57 mm Hg at 25 degrees ...
chemistry - The vapor pressure of pure water at 25 degrees Celsius is 23.77 mm ...
Chemistry(Please help) - The vapor pressure of diethyl ether is 463.57 mm Hg at ...
Chemistry - 2. A 3.37 gram sample of a nonvolatile nonelectrolyte ( no ions) is ...
Chemistry - A gas is collected over water at 30.0 degrees celsius. It's ...
Chemistry - A gas is collected over water at 30.0 degrees celsius. It's ...
Chemistry - Diethyl ether is a volatile organic compound. the vapor pressure of ...

For Further Reading

First Name:
School Subject:
Answer: