Question

When $HCl\left(aq\right)$ reacts with $Zn\left(s\right)$, which of the following product will be formed?

• A. Water and a salt
• B. An acid and a base
• C. A salt and hydrogen gas
• D. A nonmetal oxide
• E. A metal oxide

Answer 1

Answer: (C)

A salt and hydrogen gas

Zinc being an active metal readily reacts with hydrochloric acid at room temperature to form soluble salt zinc chloride and hydrogen gas.

$Zn+2HCl\to ZnC{l}_2+H_2$.

As zinc displaces hydrogen from $HCl$, this a displacement reaction. Hydrogen gas is usually prepared in the laboratory by this reaction.