Final answer:
It requires balancing the chemical equation for the reaction between hydrochloric acid and calcium carbonate. The complete equation is : 2 HCl(aq) + CaCO₃(s) → CaCl₂(aq) + H₂O(l) + CO₂(g)
Step-by-step explanation:
The student's question involves the chemical reaction between hydrochloric acid (HCl) and calcium carbonate (CaCO₃) to form calcium chloride (CaCl₂), water (H₂O), and carbon dioxide (CO₂).
To balance the chemical equation, we need to ensure that the number of each type of atom on the reactants side is equal to the number on the products side. The balanced chemical equation is:
2 HCl(aq) + CaCO₃(s) → CaCl₂(aq) + H₂O(l) + CO₂(g)
From this, we can see that it takes 2 moles of hydrochloric acid to react completely with 1 mole of calcium carbonate to produce 1 mole of calcium chloride, 1 mole of water, and 1 mole of carbon dioxide.