Cl_{2} HZn ZnCl ZnCl_{2}
I gave my students this multiple choice question: If HCl is added to Zn, what would be an expected product?

Only one answer is correct among these 4 choices:
- Cl_{2}
- HZn
- ZnCl
- ZnCl_{2}

Could you tell me which one is correct?

ZnCl_{2}