Which process requires energy for a nonspontaneous redox reaction to occur?

June 2017 NY Regents Chemistry Exam

29 Which process requires energy for a nonspontaneous redox reaction to occur?
(1) deposition
(2) electrolysis

(4) chromatography

(3) alpha decay

Solution: Electrolysis requires energy for a nonspontaneous redox reaction to occur. Alpha decay is a nuclear reaction that produces an alpha particle. Deposition is conversion of gaseous substance into solid. Chromatography is a laboratory technique that separates substances based on their polarity.

Answer: 2

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