In the reaction : `2Al(s) + 6HCl(aq) rarr 2 Al^(3+)(aq) + 6 Cl^(-)(aq) + 3H_(2)(g)`

Explanation

To solve the problem, we need to analyze the given chemical reaction and determine the relationships between the reactants and products. The reaction is:

\[ 2 \text{Al}(s) + 6 \text{HCl}(aq) \rightarrow 2 \text{Al}^{3+}(aq) + 6 \text{Cl}^-(aq) + 3 \text{H}_2(g) \]

### Step 1: Analyze the stoichiometry of the reaction
From the balanced equation, we can see the following stoichiometric relationships:
- 2 moles of Al react with 6 moles of HCl to produce 3 moles of H2.

...