99 758
Assignments Done
98.5%
Successfully Done
In May 2021

# Answer to Question #5313 in Physical Chemistry for Jen

Question #5313
0.144 g of an aluminium compound X react with an excess of water to produce a gas. This gas burns completely in O2 to form H2O and 72cm3 of CO2 only. Volume of CO2 was measured at room temperature and pressure. Deduce the formula of X
1
Expert's answer
2011-11-25T08:13:41-0500
X - AlxCy;
AlxCy + H2O = Al(OH)3&darr; + CH4&uarr;;
CH4 + 2O2 = CO2 + 2H2O;
&nu;(CH4) = 0.072/22.4 = 0.0032mol;
Because the valence of Al is 3, and the valence of C is 4 and z is taken as coefficient of proportionality, then &Mu;(AlxCy) = 26*4z+12*3z;
We have the next equation: 0.0032/3 = 0.144/26*4z + 12*3z;
0.001 = 0.144/140z;
z=1.
So, formula of X is Al4C3.

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

#### Comments

No comments. Be the first!

### Ask Your question

LATEST TUTORIALS
New on Blog
APPROVED BY CLIENTS