[SOLVED] When MgCO3(s) is strongly heated, it produces solid MgO as gaseous CO2 is driven off.Does the oxidation number of carbon change upon the formation of CO2?

[tex]MgCO_3--^T-->MgO + CO_2\uparrow[/tex]the oxidation number of carbon in MgCO3 = +IVthe oxidation number of carbon in CO2 = +IVso, there is no change

When MgCO3(s) is strongly heated, it produces solid MgO as gaseous CO2 is driven off.Does the oxidation number of carbon change upon the formation of CO2?

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