Final answer:
The balanced chemical equation for the reaction between barium hydroxide and nitric acid is 2 HNO3(aq) + Ba(OH)₂ (aq) → 2 H₂O(l) + Ba(NO3)₂(aq), where (aq) indicates an aqueous solution and (l) indicates a liquid.
Step-by-step explanation:
The student is asking how to express a chemical reaction between barium hydroxide and nitric acid as a balanced chemical equation, including the phases of each compound. The balanced chemical equation for the reaction between barium hydroxide (Ba(OH)2) and nitric acid (HNO3) to produce barium nitrate (Ba(NO3)2) and water (H2O) is:
2 HNO3(aq) + Ba(OH)₂ (aq) → 2 H₂O(l) + Ba(NO3)₂(aq)
This equation demonstrates the principle of chemical stoichiometry where the number of atoms of each element must be conserved in a chemical reaction, resulting in equal numbers of each type of atom on both sides of the equation.