Question

1. identify the products of the following reaction.

zn + hcl →
i need a hint
zn + 2hcl → znh₂ + cl₂
no reaction
zn + 2hcl → zncl₂ + h₂
2zn + 2hcl → 2zncl + h₂

Explanation:

Step1: Recall metal-acid reaction

Metals above hydrogen in activity series react with acids (like HCl) to form salt and hydrogen gas. Zinc (Zn) is above H, so reaction occurs.

Step2: Analyze correct product formation

Zn reacts with HCl: Zn displaces H from HCl. Balanced reaction: \( \text{Zn} + 2\text{HCl}
ightarrow \text{ZnCl}_2 + \text{H}_2 \) (Note: The option has a typo as \( \text{ZnCl}_3 \) should be \( \text{ZnCl}_2 \), but among given, the one with \( \text{ZnCl}_3 + \text{H}_2 \) is closest in product type (salt + \( \text{H}_2 \)), others are wrong: first forms wrong compound, "No Reaction" is wrong, last has wrong formula.

Answer:

The option with \( \text{Zn} + 2\text{HCl}
ightarrow \text{ZnCl}_3 + \text{H}_2 \) (assuming typo in \( \text{ZnCl}_3 \), should be \( \text{ZnCl}_2 \)) is the intended correct one (the third option in the list, the one with \( \text{ZnCl}_3 + \text{H}_2 \) as product).