Wednesday
July 23, 2014

Homework Help: chemistry

Posted by sumati on Tuesday, April 10, 2007 at 1:37pm.

The vapour denisty of a mixture containing NO2 & N2O4 is 38.3 at 27 deg C. Calculate the moles of NO2 in 100 g of mixture.

The vapor density is the mass of a volume of the mixture divided by the mass of an equal volume of H2 at the same P and T. If we take a mole sample, then
(molar mass mixture/2.016) = 38.3
molar mass mixture = 2.016*38.3= ??

Then let f = fraction of NO2 in the mixture and 1-f = fraction of N2O4.
molar mass NO2 = 46
molar mass N2O4 = 92
46(f) + 92(1-f) = 2.016*38.3
Solve for f.
then f x 100 = grams NO2.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - 92.01 grams of N2O4 (g) is placed in a container and allowed to ...
chemistry - Nitrogen dioxide (NO2) cannot be obtained in a pure form in the gas ...
chemistry - The following system is at equilibrium with [N2O4] = 0.55 M and [NO2...
Chem 2 - The following system is at equilibrium with [N2O4] = 0.55 M and [NO2...
Chemistry - SO2(g) + NO2(g) SO3(g) + NO (g) At a given temperature, analysis of ...
chem - the total pressure of n2o4 and no2 IS 1.38 atm. if kp is 6.75(25 C) ...
AP Chemistry - Given: N2O4 (g) 2NO2 (g) @ 25 degrees celcius, Kc is 5.84 x 10...
Chemistry - Calculate the rate at which N2O4 is formed in the following reaction...
Chemistry - Dinitrogen tetroxide decomposes to nitrogen dioxide: N2O4 (g) --->...
CHEMISTRY - A chemist studying the equilibrium N2O4(g)<----->2NO2(g) ...

Search
Members