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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: CIE alevel on November 02, 2009, 05:52:26 AM

Title: What's wrong with this reaction of exhaust gases from engines?
Post by: CIE alevel on November 02, 2009, 05:52:26 AM

Heres the questions:

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In part:
 b) (i). why does Nitrogen make up most exhaust fumes? Never understand this!

c) (i).  Is Gas II & its effect relevant & correct?
    (ii)  exam Answers says Gas I & Gas II removal reactions are not correct (balanced)
        How else am i to balance it...either way works but is there a rule.

Theres always confusions with such reactions, so is there a rule that applies in all reactions?? How to know the real products that will form with reactants??   :-\ >:(

Title: Re: What's wrong with this reaction of exhaust gases from engines?
Post by: Borek on November 02, 2009, 06:43:01 AM

Quote from: CIE alevel on November 02, 2009, 05:52:26 AM

b) (i). why does Nitrogen make up most exhaust fumes? Never understand this!

What gases enter the engine?

Title: Re: What's wrong with this reaction of exhaust gases from engines?
Post by: CIE alevel on November 02, 2009, 06:52:26 AM

Well , when octane (e.g of 1 of components in petrol) is combusted
it forms CO2 and H2O so where's the nitrogen in products??

Is it the nitrogen (which is mostly) in air that enters the combustion chambers of the engine and passes through the  exhaust fumes unaffected by other fumes??

If so then please respond to my other doubts...!

Title: Re: What's wrong with this reaction of exhaust gases from engines?
Post by: Borek on November 02, 2009, 07:14:53 AM

Quote from: CIE alevel on November 02, 2009, 06:52:26 AM

Is it the nitrogen (which is mostly) in air that enters the combustion chambers of the engine and passes through the  exhaust fumes unaffected by other fumes??

Wasn't that hard.

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

Title: Re: What's wrong with this reaction of exhaust gases from engines?
Post by: AWK on November 02, 2009, 10:48:29 AM

concerning reaction c (ii) II

http://pubs.acs.org/doi/abs/10.1021/i160042a005