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Methane gas and flames

Ahmed: NH Admin; Number of posts : 51452
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Post n°1

Methane gas and flames

by Ahmed Tue Sep 16, 2008 11:51 pm

"Methane gas is made of Molecules of CH4. Write equations to for reactions when burning methane with both yellow and blue flames.

Yellow __________________________________________
Blue____________________________________________

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"Write an equation to show how carbon monoxide can form when methane is burned."
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I looked all over Google for these two....I don't know how they expect us to find such answers.

Any help will be appreciated Smile

P.S.: This is not a test BTW, this is HW.

preid1220

preid1220: NH Moderator; Number of posts : 10749
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Post n°2

Re: Methane gas and flames

by preid1220 Tue Sep 16, 2008 11:58 pm

i sugest beating up the neard =P or asking on a science geek site

Ladien

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Post n°3

Re: Methane gas and flames

by Ladien Wed Sep 17, 2008 12:39 am

I have no idea except when you burn somrthing CO2 gets added to the equation. This sounds like a lab question. Did you do a lab in class that would answer this question?

Ahmed

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Post n°4

Re: Methane gas and flames

by Ahmed Wed Sep 17, 2008 8:19 am

Yeah, I new water vapor and CO2 is produced...but i don't know the euqation...

Hassan

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Post n°5

Re: Methane gas and flames

by Hassan Wed Sep 17, 2008 6:42 pm

"Write an equation to show how carbon monoxide can form when methane is burned."

Does this help:

In the combustion of methane, several steps are involved:

Methane is believed to form a formaldehyde (HCHO or H2CO). The formaldehyde gives a formyl radical (HCO), which then forms carbon monoxide (CO). The process is called oxidative pyrolysis:

CH4 + O2 → CO + H2 + H2O

Following oxidative pyrolysis, the H2 oxidizes, forming H2O, replenishing the active species,[clarify] and releasing heat. This occurs very quickly, usually in significantly less than a millisecond.

2H2 + O2 →2H2O

Finally, the CO oxidizes, forming CO2 and releasing more heat. This process is generally slower than the other chemical steps, and typically requires a few to several milliseconds to occur.

2CO + O2 →2CO2

Its taken from wikipedia:

http://en.wikipedia.org/wiki/Methane