What is the molecular formula that a compound containing only carbon and also hydrogen if combustion of $1.05~mathrmg$ that the link produces $3.30~mathrmg~ceCO2$ and also $1.35~mathrmg~ceH2O$ and its molar mass is around $70~mathrmg$?

Here is mine work:

$$eginarraycccccc & ceC_aH_b & ce-> & ceCO2 & + & ceH2O \ extmasses (g) & 1.05 & & 3.30 & & 1.35endarray$$

eginalign*ceCO2 & ightarrow ceC \44~mathrmg & ightarrow 12~mathrmg \3.30~mathrmg & ightarrow xendalign*

$$x = 0.9~mathrmg,~ extmoles that C = frac0.912 = 0.075$$

eginalign*ceH2O & ightarrow ce2H \18~mathrmg & ightarrow 2~mathrmg \1.35~mathrmg & ightarrow yendalign*

$$y = 0.15~mathrmg,~ extmoles the H = frac0.151 = 0.15$$

$$ extempirical formula~ceC_0.075/0.075H_0.15/0.075 -> CH2$$

$$frac7014 = 5$$

$$ extmolecular formula is~ceC5H10$$




You are watching: Calculate the empirical formula of the hydrocarbon.

physical-starrkingschool.net stoichiometry elemental-analysis
re-superstructure
boost this inquiry
monitor
edited Feb 26 "18 at 2:50
*

pentavalentcarbon
7,18155 yellow badges4343 silver- badges7272 bronze badges
request Sep 18 "14 in ~ 21:11
*

shaimashaima
10711 yellow badge22 silver- badges66 bronze badges
$endgroup$
2
add a comment |

1 prize 1


energetic oldest Votes
7
$egingroup$
$$ceC_$a$H_$b$ + $left(a+frac b4 ight)$O2 -> $a$CO2 + $fracb2$ H2O$$

Suppose you had actually $n$ moles of hydrocarbon, climate we have $acdot n$ moles of $ceCO2$ and also $fracb2cdot n$ moles of $ceH2O$ splitting their moles we"ll acquire $2fracab$:$$2frac ab=frac330/44135/18=frac7.57.5=1implies frac ab=frac12$$So the empirical formula is $ceCH2$Now because that actual formula $frac7014=5$Yes the formula is $ceC5H10$.


re-superstructure
improve this price
monitor
edited Sep 19 "14 in ~ 4:39
*

young name - マーチン♦
41.5k1111 yellow badges145145 silver badges283283 bronze badges
answered Sep 19 "14 in ~ 3:41
*

RE60KRE60K
3,70333 gold badges1919 silver badges4747 bronze badges
$endgroup$
0
add a comment |
Highly active question. Earn 10 reputation (not counting the combination bonus) in order come answer this question. The reputation need helps safeguard this question from spam and also non-answer activity.

Not the prize you're spring for? Browse various other questions tagged physical-starrkingschool.net stoichiometry elemental-analysis or questioning your very own question.


Featured on Meta
Linked
0
How to uncover the volume the the assets in methane combustion?
related
3
execute I have actually to think about the molecular mass that the oxygen atom or the diatomic oxygen molecule as soon as determining the empirical formula that an steel oxide?
1
identify equilibrium concentration from early conditions and also equilibrium consistent
1
Theoretical yields and also determining the variety of moles in a reaction
4
Why is it wrong to calculation the quantity of oxygen directly from the products of a combustion reaction?
1
Gibbs free energy for the evaporation that water
2
just how to derive formulas for n variable of different varieties of reactions?
warm Network questions an ext hot inquiries
concern feed
i ordered it to RSS
concern feed To i ordered it to this RSS feed, copy and also paste this URL right into your RSS reader.


*

starrkingschool.net
company
stack Exchange Network
site design / logo design © 2021 ridge Exchange Inc; user contributions licensed under cc by-sa. Rev2021.11.3.40639




See more: How To Write Thank You In Greek, How Do I Saythank You In Greek

starrkingschool.net ridge Exchange works best with JavaScript permitted
*

her privacy

By click “Accept all cookies”, you agree ridge Exchange can store cookies on your machine and disclose info in accordance through our Cookie Policy.