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Factors Affecting Electrolysis

According to ...

Question

According to preferential discharge theory, out of number of ions the one which requires ___ energy will be liberated at a given electrode.

A

least, first

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B

least, last

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C

higher, first

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D

highest, last

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Solution

The correct option is A least, first
The ions which required the least energy will be liberated first at a given electrode.
The cation that has a cover position in the electrochemical series is preferentially discharged whereas, an anion that has higher position in electrochemical series is preferentially discharged.

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