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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