Which reaction is not an example of a redox reaction?

Question

Quizplus · Accepted Answer

A redox reaction involves the transfer of electrons between species. In option A, mercury is oxidized from a neutral state to a 2+ state, while oxygen is reduced from a 0 state to a 2- state. In option B, no transfer of electrons is occurring; the reaction is simply a double displacement reaction. In option C, carbon is oxidized from 0 to +4, while oxygen is reduced from 0 to -2. In option D, aluminum is oxidized from 0 to +3, while hydrogen is reduced from +1 to 0. In option E, aluminum is reduced from +3 to 0, while oxygen is oxidized from -2 to 0. Therefore, the only reaction that is not an example of a redox reaction is option B.

Which Reaction Is Not an Example of a Redox Reaction