Question

Based on the equation below, which of the following statements best describes what should be observed as the reaction takes place?

Zn(s) + 2HCl (14) → ZnCl₂(aw) + H₂(g)
A)Bubbles forming from hydrogen gas production
B)Solid zinc dissolving
C)Chlorine forming a solid precipitate
D)Bubbles forming from chlorine gas production

Answer 1

The reaction between zinc and hydrochloric acid produces visible bubbles of hydrogen gas while the solid zinc metal dissolves to form aqueous zinc chloride. The correct option is A.

Step-by-step explanation:

Based on the equation Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g), the correct observation to expect during the reaction is bubbles forming due to hydrogen gas production.

When zinc metal reacts with hydrochloric acid, an oxidation-reduction reaction occurs, resulting in the dissolution of solid zinc and the evolution of hydrogen gas that can be seen as bubbling. Chloride ions remain in the aqueous phase and do not form a solid precipitate or gas. The correct option is A.