The thermite reaction is used in welding applications and chemistry demonstrations because it releases a tremendous amount of energy. Which of the following statements is not correct regarding this reaction? 8Al 3Fe₃O₄ 9Fe 4Al₂O₃ A)Aluminum is oxidized. B)Iron is reduced. C)The oxidation number of Al changes from 0 to +3. D)Aluminum is the reducing agent. E)Three electrons are transferred from each aluminum atom to each iron atom.

Question

Quizplus · Accepted Answer

In the thermite reaction, aluminum is oxidized (loses electrons) and iron is reduced (gains electrons). The oxidation number of aluminum changes from 0 to +3. Aluminum is the reducing agent because it is causing the reduction of iron. Three electrons are transferred from each aluminum atom to each iron atom (as shown by the electron transfer arrows). The only statement that is not correct is choice C, which states that the oxidation number of aluminum changes from 0 to +1, but it actually changes to +3.

The Thermite Reaction Is Used in Welding Applications and Chemistry