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AP® Chemistry

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Moderate

Coupled Reactions

APCHEM-9EUUJE

External sources of energy can be used to drive a non-spontaneous reaction.

Which of the following is NOT an example of the use of an external energy source driving a non-spontaneous reaction?

A

Recharging a battery in a cell phone or a laptop using an electrical cord.

B

Synthesis of $H_2SO_3$ from water and sulfur dioxide in the atmosphere during a rain shower.

C

Extraction of copper from chalcocite, a mineral which contains $CuS_2$ with electrified oxygen.

D

Electroplating of a thin gold covering onto a piece of copper based jewelry.