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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?


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


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


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


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

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