Passage Students Were Asked to Bring Items from Home to Serve

Passage
Students were asked to bring items from home to serve as examples for different types of reactions.  The instructor provided additional reactants, solvents, heat, or a catalyst to demonstrate reactions with the household items.The students brought aluminum foil, table salt, sugar, baking soda, vinegar, toilet bowl cleaner, hydrogen peroxide, and antacid tablets.Experiment 1Reactions were performed using the household items.  The reaction conditions and student observations are recorded in Table 1.Table 1  Reaction Conditions and Visual Observations
Experiment 2The reactions that were observed to produce gas bubbles in Experiment 1 were repeated, and samples of the gases produced were collected.  Each gas sample was tested by holding a burning (glowing) wooden splint within the reaction vessel to determine if the reaction evolved O₂, H₂, or CO₂.  A glowing splint placed in O₂ will burn more brightly, one placed in H₂ will ignite the gas, and one placed in CO₂ will be extinguished.  The results of the gas tests are recorded in Table 2.Table 2  Glowing Splint Gas Test Observations

-The reaction between the toilet bowl cleaner and the aluminum foil forms aqueous AlCl₃ in addition to the gas that is produced.  Which of the following best explains this outcome of the reaction?

A) Aluminum undergoes a double replacement reaction with the aqueous HCl in the cleaner.
B) Aluminum participates in a single replacement reaction with the aqueous HCl in the cleaner.
C) The AlCl₃ forms by a combination reaction between Al and the aqueous HCl in the cleaner.
D) The AlCl₃ forms by a decomposition reaction between Al and the aqueous HCl in the cleaner.