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    mgco3->mgo+co2, if it's a combustion reaction why does it not require oxygen? is it right to think it's because the fire that heats it needs oxygen but the actual reactant does not
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    (Original post by Christina Tiana)
    mgco3->mgo+co2, if it's a combustion reaction why does it not require oxygen? is it right to think it's because the fire that heats it needs oxygen but the actual reactant does not
    It isn't a combustion reaction, the magnesium carbonate is decomposing into magnesium oxide and carbon dioxide

    Remember that combustion reactions produce carbon dioxide and water.
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    The person above is right. It is a process of thermal decomposition.


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    Yep as the two people above said it's thermal decomposition. Combustion reactions usually take the general form of X + O2 --> CO2 + H2O
    e.g. C2H4 + 3O2--> 2CO2 +2H2O
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    Combustion reactions don't always make water or carbon dioxide.

    When magnesium burns, for example...
 
 
 
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