To determine the reactants in the chemical equation [tex]\( \text{Zn} + 2 \text{HCl} \rightarrow \text{ZnCl} + \text{H} \)[/tex], let's carefully identify each component involved in the reaction.
1. Identify the given chemical equation:
[tex]\[
\text{Zn} + 2 \text{HCl} \rightarrow \text{ZnCl} + \text{H}
\][/tex]
2. Identify the substances present on the left side of the arrow (reactants):
- The equation shows reactants as [tex]\( \text{Zn} \)[/tex] and [tex]\( 2 \text{HCl} \)[/tex].
- [tex]\( \text{Zn} \)[/tex] stands for zinc.
- [tex]\( \text{HCl} \)[/tex] is hydrochloric acid.
3. Identify each reactant:
- [tex]\( \text{Zn} \)[/tex] (zinc) is a metallic element.
- [tex]\( \text{HCl} \)[/tex] (hydrochloric acid) is a common acid.
4. Restate the reactants in a clear form:
- The reactants in this chemical equation are zinc and hydrochloric acid.
Thus, the best answer for the question is:
D. zinc and hydrochloric acid.
