Complete and balance each gas-evolution equation. b. HCl(aq) + KHCO₃(aq) → c. HC₂H₃O₂(aq) + NaHSO₃(aq) → d. (NH₄)₂SO₄(aq) + Ca(OH)₂(aq) →

Verified step by step guidance

1. Step 1: Identify the reactants and products for each reaction. For reaction b, the reactants are HCl(aq) and KHCO_3(aq). For reaction c, the reactants are HC_2H_3O_2(aq) and NaHSO_3(aq). For reaction d, the reactants are (NH_4)_2SO_4(aq) and Ca(OH)_2(aq).
2. Step 2: Determine the gas that evolves in each reaction. In reaction b, the reaction between an acid and a bicarbonate typically produces carbon dioxide gas (CO_2). In reaction c, the reaction between an acid and a bisulfite typically produces sulfur dioxide gas (SO_2). In reaction d, the reaction between ammonium sulfate and calcium hydroxide typically produces ammonia gas (NH_3).
3. Step 3: Write the unbalanced chemical equations including the evolved gases. For reaction b: HCl(aq) + KHCO_3(aq) → KCl(aq) + H_2O(l) + CO_2(g). For reaction c: HC_2H_3O_2(aq) + NaHSO_3(aq) → NaC_2H_3O_2(aq) + H_2O(l) + SO_2(g). For reaction d: (NH_4)_2SO_4(aq) + Ca(OH)_2(aq) → CaSO_4(s) + H_2O(l) + NH_3(g).
4. Step 4: Balance each chemical equation by ensuring the same number of each type of atom on both sides of the equation. Start by balancing the atoms that appear in the least number of compounds, and then balance the remaining atoms.
5. Step 5: Verify that each equation is balanced by counting the atoms of each element on both sides of the equation. Ensure that the charges are balanced if the reaction involves ionic species.