How Does Metal React With Acid?

Answer:

Acids react with most metals to form hydrogen gas and salt.  Nevertheless, not all metals react in the same way to acids. When an acid reacts with metal, salt and hydrogen gas are produced.

Example

Zinc powder reacts with hydrochloric acid that releasesH2 gas and zinc chloride.

Zn(s) + 2HCl → ZnCl2 + H2

The salt that is produced depends upon acid and metal reacting.

Metals react with dilute hydrochloric acid to form the corresponding chloride salt and hydrogen which is evolved as bubbles. The rate of formation of bubbles was the fastest in the case of magnesium.

The reaction was also the exothermic reaction and the reactivity decreases in the order

Mg > Al> Zn > Fe.

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