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Which methods would be suitable for determining the concentration of an aqueous solution of KMnO4? I. Visible spectrophotometry (colorimetry) II. Redox titration (A) I only (C) Both I and II (B) II only (D) Neither I nor II

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Answer:

C

Explanation:

Since the solution have an observable color, that means that it absorbs light in the visible region hence it can be determined by colorimetry. Secondly, KMnO4 is a reducing agent which can be titrated against an oxidizing agent and it's concentration accurately determined.

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