Aqueous permanganate ion,

CHEMISTRY · Subjective · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

\text{MnO}_4^-

, is deep purple and is reduced to nearly colorless

\text{Mn}^{2+}

in acidic solution. Identify the laboratory instrument that would most directly monitor the progress of this reaction in real time.