Question

What are the correct half reactions for the following reaction: Zn + 2 HCl -> H₂ + ZnCl₂?

A) Zn+2e−→Zn₂+ and 2H−→H₂+2e−
B) Zn→Zn₂++2e− and 2H++2e−→H₂
C) Zn→Zn++e− and 2H++e−→H₂
D) Zn+e−→Zn+ and 2H−→H₂+e−

Answer 1

The correct half reactions for the given reaction Zn + 2 HCl -> H₂ + ZnCl₂ are: Answer B: Zn → Zn²++ 2e− and Answer A: 2H++ 2e− → H₂.

Step-by-step explanation:

The correct half reactions for the given reaction Zn + 2 HCl -> H₂ + ZnCl₂ are:

Answer B: Zn → Zn²++ 2e−

Answer A: 2H++ 2e− → H₂

These half reactions represent the oxidation and reduction processes that occur in the overall reaction. In the oxidation half reaction, Zn loses electrons and forms Zn²+ ions, while in the reduction half reaction, 2H+ ions gain electrons to form H₂ gas.