Question

Predict the products of each of the following reactions. (Note: In addition to using the information in this chapter, also use the knowledge you have accumulated at this stage of your study, including information on the prediction of reaction products.)

a. CO₂ and H₂O
b. NaCl and H₂O
c. Al₂O₃ and HCl
d. H₂ and O₂

Answer 1

a. CO2 and H2O: CO2 + H2O → H2CO3 → H+ + HCO3-, b. NaCl and H2O: NaCl(s) + H2O(l) → Na+(aq) + Cl-(aq), c. Al2O3 and HCl: Al2O3 + 6HCl → 2AlCl3 + 3H2O, d. H2 and O2: 2H2 + O2 → 2H2O

Step-by-step explanation:

a. CO2 and H2O: When carbon dioxide (CO2) reacts with water (H2O), they form carbonic acid (H2CO3), which then dissociates into hydrogen ions (H+) and bicarbonate ions (HCO3-). The balanced chemical equation for this reaction is: CO2 + H2O → H2CO3 → H+ + HCO3-

b. NaCl and H2O: When sodium chloride (NaCl) dissolves in water (H2O), the Na+ ions and Cl- ions separate and become hydrated, forming sodium ions (Na+) and chloride ions (Cl-). The balanced ionic equation for this reaction is: NaCl(s) + H2O(l) → Na+(aq) + Cl-(aq)

c. Al2O3 and HCl: When aluminum oxide (Al2O3) reacts with hydrochloric acid (HCl), they form aluminum chloride (AlCl3) and water (H2O). The balanced chemical equation for this reaction is: Al2O3 + 6HCl → 2AlCl3 + 3H2O

d. H2 and O2: When hydrogen gas (H2) reacts with oxygen gas (O2), they form water (H2O). The balanced chemical equation for this reaction is: 2H2 + O2 → 2H2O