What happens when an acid or base reacts with a metal, for example, Mg.

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The discussion focuses on the reaction between hydrochloric acid (HCl) and magnesium (Mg). When magnesium is introduced to hydrochloric acid, it undergoes oxidation, releasing electrons and forming magnesium ions (Mg2+). The half-reaction for magnesium oxidation is represented as Mg → Mg2+ + 2 e-, with a standard electrode potential of 2.37 V. Concurrently, the hydrogen ions (H+) from the acid are reduced, gaining electrons to form dihydrogen gas (H2), with the half-reaction 2H+ + 2e- → H2, having a standard potential of 0.0 V. The overall reaction can be summarized as 2HCl + Mg → MgCl2 + H2, illustrating the formation of magnesium chloride (MgCl2) and hydrogen gas as products. The reaction's dynamics can vary based on factors like concentration and temperature.
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The acid: Hydrochloric
What happens step by step? I am unfamiliar with acids and bases, so I just want to know what's happening to help figure out. Thanks.
 
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Magnesium is fairly reducing and so, depending on conditions (condentration, temperature) the acid would be reduced to form dihydrogen.

Mg --> Mg2+ + 2 e- E = 2.37 V
2H+ + 2e- --> H2 E = 0.0 V
 
2HCl+Mg-->MgCl2+H2
 
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