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)?

Name: 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)?
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Question

Quizplus · Accepted Answer

MnO₂ and Mn²⁺ both contain manganese in different oxidation states, making them suitable for constructing a redox electrode.

Which One of the Following Pairs of Substances Could Be