Question

For each of the following chemical reactions, write a word equation, a skeleton equation, and a balanced chemical equation. Be sure to show the state of each reactant and product.

Solid calcium carbonate is commonly used in antacids because it reacts with the hydrochloric acid found in the stomach. The products of this reaction are aqueous calcium chloride, carbon dioxide, and water.

Answer 1

Calcium carbonate reacts with hydrochloric acid to form calcium chloride, carbon dioxide, and water, a reaction used in antacids. The balanced chemical equation for this reaction is CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l).

Step-by-step explanation:

When calcium carbonate reacts with hydrochloric acid, a chemical reaction occurs that is commonly used in antacids to neutralize stomach acid. The word equation for this reaction is:

• Calcium carbonate + Hydrochloric acid → Calcium chloride + Carbon dioxide + Water

The skeleton equation for this reaction is as follows:

• CaCO3(s) + HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)

And the balanced chemical equation, complete with states of matter, is:

CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)

Here, the balanced equation includes stoichiometric coefficients that ensure the law of conservation of mass is upheld, indicating that for every mole of calcium carbonate reacting, two moles of hydrochloric acid are needed to yield one mole of calcium chloride, one mole of carbon dioxide, and one mole of water.