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Which One of the Following Pairs of Substances Could Be

Question 77

Multiple Choice

Which one of the following pairs of substances could be used to construct a single redox electrode (i.e., they have an element in common, but in different oxidation states) ?


A) HCl and Cl −
B) H + and OH −
C) H 2O and H +
D) Fe 3+ and Fe 2O 3
E) MnO 2 and Mn 2+

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