Question

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

Answer 1

C

Step-by-step 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.