Here, the reactants and products of C and Mg are different, and there are no control variables, so it is impossible to make a judgment.

The severity of the reaction here should be the sum of the oxidizability of the oxidant and the reducibility of the reductant. The stronger the oxidation, the stronger the reduction and the more intense the reaction. Do not depend on any party; In the university, it will be simply expressed by potential difference, high oxidation, high potential, high reduction and low potential. The greater the difference obtained by subtraction, the greater the k (equilibrium constant) of the reaction, and generally the more intense it is;

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