Question

In what ways are the reactions of hydrochloric acid with calcium oxide and calcium carbonate similar or different?

a) Similar: both produce carbon dioxide; Different: different gas produced
b) Similar: both are exothermic; Different: different products formed
c) Similar: both are neutralization reactions; Different: different salts formed
d) Similar: both involve metal oxides; Different: different acids used

Answer 1

The reactions of hydrochloric acid with calcium oxide and calcium carbonate are similar in that both produce carbon dioxide gas, but they differ in the products formed.

Step-by-step explanation:

The reactions of hydrochloric acid with calcium oxide and calcium carbonate are both similar and different.

1. Similar: Both reactions produce carbon dioxide gas. When hydrochloric acid reacts with calcium oxide, it produces calcium chloride and water. When hydrochloric acid reacts with calcium carbonate, it produces calcium chloride, water, and carbon dioxide gas.
2. Different: The products formed are different. When hydrochloric acid reacts with calcium oxide, the product formed is calcium chloride. When hydrochloric acid reacts with calcium carbonate, the products formed are calcium chloride, carbon dioxide gas, and water.