Write a balanced chemical equation, include phases, for the following acid reaction: HBr reacting with Li₂O.

• A. 2 HBr(aq) + Li₂O(s) → H₂O(l) + 2 LiBr(aq)
• B. 2 HBr(aq) + Li₂O(s) → H₂(g) + 2 LiBrO(aq)
• C. 2 HBr(aq) + Li₂O(s) → 2 HO(aq) + 2 LiBr(aq)
• D. HBr(aq) + Li₂O(aq) → H₂O(l) + 2 LiBr(s)

Answer: (A)

Verified step by step guidance

1. Identify the reactants and products in the chemical reaction. The reactants are HBr and Li2O, and the products are H2O and LiBr.
2. Determine the phases of each compound: HBr is aqueous (aq), Li2O is solid (s), H2O is liquid (l), and LiBr is aqueous (aq).
3. Write the unbalanced chemical equation with the identified phases: HBr(aq) + Li2O(s) → H2O(l) + LiBr(aq).
4. Balance the chemical equation by ensuring the number of atoms of each element is the same on both sides. Start by balancing the lithium (Li) atoms: 2 HBr(aq) + Li2O(s) → H2O(l) + 2 LiBr(aq).
5. Check the balance of hydrogen (H) and bromine (Br) atoms. Ensure that the number of each type of atom is equal on both sides of the equation. The balanced equation is: 2 HBr(aq) + Li2O(s) → H2O(l) + 2 LiBr(aq).