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

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SUMMARY

The reaction between magnesium (Mg) and hydrochloric acid (HCl) results in the formation of magnesium chloride (MgCl2) and dihydrogen gas (H2). Magnesium acts as a reducing agent, undergoing oxidation to form Mg2+ ions while reducing H+ ions from the acid to produce hydrogen gas. The half-reactions involved are Mg → Mg2+ + 2 e- with a standard electrode potential of 2.37 V, and 2H+ + 2e- → H2 with a standard electrode potential of 0.0 V. This reaction is influenced by factors such as concentration and temperature.

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LogicalAcid
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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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