Quick discription of the experiment:Anyway, this can be replicated in the home by taking a glass dish, putting a piece of heavy aluminum foil in the bottom, then filling the dish with hot tap water and adding a teaspoon of baking sodaStir well, and place the silver object in the solution, making sure that the object touches the aluminum foil at the bottomAfter several minutes, remove the silver item from the pan and rinse with waterYou find out that the tarnish disappearsThe process can be repeated if the tarnish is heavy.Questions:3Why was it necessary to heat the water that you mixed with the baking soda?4Why was aluminum foil used instead of another metal?6In the space below, type the redox half-reaction for the chemical reactionIdentify which material is oxidized, and which is reduced.
Heat the water to increase the rate of the reaction Aluminum foil was chosen for it's electronegativity; you're creating an aluminum-silver batteryroughly Al + AuOn - AlOn + Au The silver has already oxidized (tarnished) so it must now be reducedHence,it is the aluminum that is being oxidized.
