Question

question 30 (1 point)
aluminum metal reacts with gaseous chlorine to give solid aluminum chloride. this reaction can be classified as:

1. aqueous ionic precipitation reaction
2. synthesis reaction
3. oxidation-reduction reaction
4. both b and c are correct

Explanation:

1. Analyze option 1: Aqueous ionic precipitation reactions occur in aqueous solutions with a precipitate forming. The reaction here is between solid Al and gaseous Cl₂, not in aqueous solution, so option 1 is incorrect.
2. Analyze option 2: A synthesis reaction is when two or more substances combine to form a single product. The reaction \( 2\text{Al}(s) + 3\text{Cl}_2(g)

ightarrow 2\text{AlCl}_3(s) \) shows Al and Cl₂ combining to form AlCl₃, so it is a synthesis reaction.

1. Analyze option 3: In this reaction, Al (oxidation state 0) becomes \( \text{Al}^{3+} \) (oxidation state +3, oxidized), and Cl (oxidation state 0) becomes \( \text{Cl}^- \) (oxidation state -1, reduced). So it is an oxidation - reduction reaction.
2. Since the reaction is both a synthesis reaction (option 2) and an oxidation - reduction reaction (option 3), option 4 (Both b and c are correct) is correct.

Answer:

1. Both b and c are correct