Question

Zn + 2HCl → ZnCl2 + H2
Which type of reaction is this?
A. single-replacement
B. electronegative
C. ionic
D. combustion

Answer 1

The reaction you provided, Zn + 2HCl → ZnCl2 + H2, is classified as a **single-replacement reaction** (also known as a single-displacement reaction). In this type of reaction, one element is displaced from a compound by another element.

So the correct answer is:
**A. single-replacement**.