The balanced equation for the reaction between hydrochloric acid (HCl) and aluminum metal (Al) is:

2 Al + 6 HCl → 2 AlCl₃ + 3 H₂

Here's what the equation represents:

* 2 Al: Two moles of aluminum metal react

* 6 HCl: Six moles of hydrochloric acid react

* 2 AlCl₃: Two moles of aluminum chloride are produced (a salt)

* 3 H₂: Three moles of hydrogen gas are produced

Explanation:

This is a single displacement reaction where the more reactive aluminum metal displaces hydrogen from hydrochloric acid. The aluminum reacts with hydrochloric acid to form aluminum chloride and hydrogen gas. The hydrogen gas is released as bubbles.

Important Note: This reaction is exothermic, meaning it releases heat and can be quite vigorous, especially if the hydrochloric acid is concentrated.