(A) The chemical reaction for the combustion of sugar is: $C_{12}H_{22}O_{11} + 12O_2 \to 12CO_2 + 11H_2O$. In this reaction,the oxidation state of ca

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(A) The chemical reaction for the combustion of sugar is: $C_{12}H_{22}O_{11} + 12O_2 \to 12CO_2 + 11H_2O$. In this reaction,the oxidation state of carbon in $C_{12}H_{22}O_{11}$ is $0$ (average),while in $CO_2$,it is $+4$. Since the oxidation state of carbon increases from $0$ to $+4$,the process is an oxidation reaction.