combustion reactions

[andyjl]

I just need some clarification on what combustion reactions are. In the kaplan online workshop, it says that "it is a type of combination reaction where a substance is burned in the presence of gas."

an example is 3 Mg (s) + N2 (g) --> Mg3N2 (s)

But in my general chem textbook and I believe in the kaplan review book, it says that it is a reaction in which elemental oxygen is burned and oxygen appears in every product.

Can someone clarify what combustion reactions are?

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[scottyhoop]

my understanding of combustion reactions was that they involved O2 as a reactant and is a pretty fast reaction that produces a flame. It's been a long time since I went over that stuff...so I should probably read up on it.
Scott

 

[doc toothache]

I just need some clarification on what combustion reactions are. In the kaplan online workshop, it says that "it is a type of combination reaction where a substance is burned in the presence of gas."

an example is 3 Mg (s) + N2 (g) --> Mg3N2 (s)

But in my general chem textbook and I believe in the kaplan review book, it says that it is a reaction in which elemental oxygen is burned and oxygen appears in every product.

Can someone clarify what combustion reactions are?

Combustion is an exothermic reaction between a fuel and an oxidant. The oxidant does not have to be oxygen.