AP Chemistry
4.9 Oxidation-Reduction (Redox) Reactions
A student analyzes the vanadium content in an ore sample using a redox titration. In an acidic solution, the reaction between oxovanadium(IV) ions and permanganate ions proceeds according to the balanced equation below:
\[ 5\,\text{VO}^{2+}\text{(aq)} + \text{MnO}_4^-\text{(aq)} + \text{H}_2\text{O(l)} \rightarrow 5\,\text{VO}_2^+\text{(aq)} + \text{Mn}^{2+}\text{(aq)} + 2\,\text{H}^+\text{(aq)} \]
Which of the following correctly identifies the oxidizing agent and describes the change in the oxidation state of the transition metal atom in that agent?
\[ 5\,\text{VO}^{2+}\text{(aq)} + \text{MnO}_4^-\text{(aq)} + \text{H}_2\text{O(l)} \rightarrow 5\,\text{VO}_2^+\text{(aq)} + \text{Mn}^{2+}\text{(aq)} + 2\,\text{H}^+\text{(aq)} \]
Which of the following correctly identifies the oxidizing agent and describes the change in the oxidation state of the transition metal atom in that agent?
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