Question

Complete and balance each of the following equations for gas-evolution reactions.

HNO3(aq)+Na2SO3(aq)→

Express your answer as a chemical equation. Identify all of the phases in your answer.

HBr(aq)+NaHCO3(aq)→

Express your answer as a chemical equation. Identify all of the phases in your answer.

HC2H3O2(aq)+NaHSO3(aq)→

Express your answer as a chemical equation. Identify all of the phases in your answer.

(NH4)2SO4(aq)+Ca(OH)2(aq)→

Express your answer as a chemical equation. Identify all of the phases in your answer

Answer 1

1. HNO3 reacts with Na2SO3 to give NaNO3, SO2 and H2O. Balanced reaction can be shown as follows:

$2HNO_{3} (aq) + Na_{2}SO_{3}(aq)\rightarrow 2NaNO_{3}(aq) + SO_{2}(g) + H_{2}O(l)$

2. HBr reacts with NaHCO3 to give NaBr, CO2 and H2O. Balanced reaction can be shown as follows:

$HBr (aq) + NaHCO_{3}(aq)\rightarrow NaBr(aq) + CO_{2}(g) + H_{2}O(l)$

3. HC2H3O2 reacts with NaHSO3 to give NaC2H3O2, SO2 and H2O. Balanced reaction can be shown as follows:

$HC_{2}H_{3}O_{2} (aq) + NaHSO_{3}(aq)\rightarrow NaC_{2}H_{3}O_{2}(aq) + SO_{2}(g) + H_{2}O(l)$

4. (NH4)2SO4 reacts with Ca(OH)2 to give CaSO4, NH3 and H2O. Balanced reaction can be shown as follows:

$(NH_{4})_{2}SO_{4} (aq) + Ca(OH)_{2}(aq)\rightarrow CaSO_{4}(s) + 2NH_{3}(g) + 2H_{2}O(l)$