(acid medium), (acid medium), At what pH will the above two have the same value

CHEMISTRY · Subjective · A Level · Chemistry · Electrode potentials · Electrode potentials

Problem

\text{NO}_3^- \longrightarrow \text{NO}_2

(acid medium),

E^0 = 0.790\text{ V}

\text{NO}_3^- \longrightarrow \text{NH}_3\text{OH}^+

(acid medium),

E^0 = 0.731\text{ V}

At what pH will the above two have the same

E

value? Assume the concentration of all other species except

[\text{H}^+]

to be unity.