Final answer:
The correct chemical equation for the reaction between calcium hydroxide and hydrochloric acid is Ca(OH)2(aq) + 2HCl(aq) → CaCl2(aq) + 2H2O(l), which is a neutralization reaction producing a salt and water.
Step-by-step explanation:
The chemical equation that correctly represents the reaction between calcium hydroxide (Ca(OH)2) and hydrochloric acid (HCl) is:
Ca(OH)
2
(aq) + 2HCl(aq) → CaCl
2
(aq) + 2H
2
O(l)
In this reaction, calcium hydroxide, a base, reacts with hydrochloric acid, an acid, to form calcium chloride, a salt, and water. This is an example of a neutralization reaction. The correct option from the choices provided would thus be the equation that shows one formula unit of calcium hydroxide reacting with two formula units of hydrochloric acid to produce one formula unit of calcium chloride and two formula units of water.