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General Chemistry

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Electrochemistry

Question
5 out of 10
 

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By comparing standard reduction potentials, we can compare the reduction and oxidation powers of elements or ionic species. Some standard reduction potential values are given in Table 1.


Which of the following processes is most likely to be a spontaneous process?

A Oxidation of copper
B Reduction of chlorine
C Oxidation of fluoride ion
D Reduction of zinc ion
Ans. B For a reaction to be spontaneous, the electrode potential should be positive. Oxidation of copper has a negative electrode potential. That rules out Choice A. Oxidation of fluoride ion and reduction of zinc ion have negative electrode potentials, which rules out Choices C and D respectively. The reduction of chlorine represented below has a positive potential which indicates spontaneity.

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Electrochemistry Flashcard List

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