Question

question 7 of 30 which of the following processes involves an oxidation - reduction reaction and allows engineers to coat one metal with another? a. sublimation b. solidifying c. deposition d. electroplating

Explanation:

Electroplating is an electrochemical process. In this process, metal ions in solution gain electrons (reduction) at the cathode to deposit as a metal layer on another metal object, while an oxidation reaction occurs at the anode. Sublimation is a phase - change from solid to gas without passing through the liquid state and doesn't involve oxidation - reduction for coating metals. Solidifying is a phase - change from liquid to solid and is not related to oxidation - reduction for metal - coating. Deposition can be various processes, but electroplating is the specific process that involves oxidation - reduction for metal - coating.

Answer:

D. Electroplating