Explain magnesium and alumnium react with an acidic solution

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Both magnesium and alumnium react with an acidic solution to produce hydrogen. Why is that only one of the following equations correctly describes the reaction?

Mg(s) + 2H+(aq) --> Mg2+(aq) + H2(g)

Al(s) + 2H+(aq) --> Al3+(aq) + H2(g)

Reference no: EM13645955

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