Given ; ; Based on the data given above

CHEMISTRY · Single correct · A Level · Chemistry · Electrode potentials · Electrode potentials

Problem

Given

E_{\text{Cr}^{3+}/\text{Cr}}^{\circ} = -0.74 \text{ V}

;

E_{\text{MnO}_4^-/\text{Mn}^{2+}}^{\circ} = 1.51 \text{ V}

E_{\text{Cr}_2\text{O}_7^{2-}/\text{Cr}^{3+}}^{\circ} = 1.33 \text{ V}

;

E_{\text{Cl}_2/\text{Cl}^-}^{\circ} = 1.36 \text{ V}

Based on the data given above, the strongest oxidising agent will be : (1)

\text{Mn}^{2+}

(2)

\text{MnO}_4^-

(3)

\text{Cl}^-

(4)

\text{Cr}^{3+}