Quantcast

Does combustion of hydrocarbons yield water vaper or liquid water?

This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.

mddang

Full Member
10+ Year Member
Joined
Dec 30, 2007
Messages
329
Reaction score
3

Members don't see this ad.
In one of Kaplan's subject test, it says liquid water is formed, but I always thought combustion of hydrocarbons produced water vapor.

Someone clarify pleaseeee. Thanks.
 

mddang

Full Member
10+ Year Member
Joined
Dec 30, 2007
Messages
329
Reaction score
3
Hmmm.. Interesting.. Now in the 'Chemical Reaction Types Workshop', it shows water vapor as one of the products of the combustion of hydrocarbons...
 

ProHeartBreaker

Full Member
10+ Year Member
Joined
Sep 26, 2007
Messages
45
Reaction score
0
I just checked my Chemistry book as source of reference; it said "liquid water" is the result of combustion of hydrocarbons. However, vapor water is the product when there is a combustion of hydrogen gas + O2 (Wikipedia baby!) This question was in DAT Destroyer huh?
 

mddang

Full Member
10+ Year Member
Joined
Dec 30, 2007
Messages
329
Reaction score
3
I just checked my Chemistry book as source of reference; it said "liquid water" is the result of combustion of hydrocarbons. However, vapor water is the product when there is a combustion of hydrogen gas + O2 (Wikipedia baby!) This question was in DAT Destroyer huh?
Naw, it was a problem in Kaplan.. I'm gonna post some screenshots so you guys can see..


This one is from the explanation of the problem.
2isayok.jpg




This one is from the workshop.
15d2asl.jpg




In the problem, it did state that the reaction took place at 298K and at a pressure of 1atm, so I can see why we'll have liquid water.


In the reaction from the workshop, no pressure or temperature was given.
 
Top