Asked by RJ

A mixture weighing 7.290 mg contained only cyclohexane, C6H12 (FM 84.159), and oxirane, C2H4O (FM 44.053). When the mixture was analyzed by combustion analysis, 21.999 mg of CO2 (FM 44.010) were produced. Find the weight percent of oxirane in the mixture.

Answers

Answered by DrBob222
The combustion equations are as follows:
C6H12 + 9O2 ==> 6CO2 + 6H2O
2C2H4O + 5O2 ==> 4CO2 + 4H2O

This is an equation with two unknowns. Here are the two equations which you should solve simultaneously.
Let Y = milligrams cyclohexane
and Z = milligrams oxirane
===================
Y + Z = 7.290 is eqn 1.
(6Y*44.01/84.159) + (2Z*44.01/44.053) = 21.999 is eqn 2.
After you find Z, then
%Z = (Z(in mg)/7.290)*100 = ?


Answered by RJ
Thank you DrBob222!
Answered by kitso
10.5 wt%
Answered by Imnasa
13%
Answered by Anonymous
10.8
There are no AI answers yet. The ability to request AI answers is coming soon!

Related Questions