ElectrochemistryHard
Question
For the reduction of NO3- ion in an aqueous solution, Eo is +0.96 V. Values of Eo for some metal ions are given below
V2+ (aq) + 2e- → V Eo = - 1.19 V
Fe3+(aq) + 3e- → Fe Eo = - 0.04 V
Au3+(aq) + 3e- → Au Eo = + 1.40 V
Hg2+ (aq) + 2e- → Hg Eo = + 0.86 V
The pair(s) of metals that is(are) oxidized by NO3- in aqueous solution is(are)
V2+ (aq) + 2e- → V Eo = - 1.19 V
Fe3+(aq) + 3e- → Fe Eo = - 0.04 V
Au3+(aq) + 3e- → Au Eo = + 1.40 V
Hg2+ (aq) + 2e- → Hg Eo = + 0.86 V
The pair(s) of metals that is(are) oxidized by NO3- in aqueous solution is(are)
Options
A.V and Hg
B.Hg and Fe
C.Fe and Au
D.Fe and V
Solution
EoNO3- (aq)(SRP) = 0.96 V All V, Fe, Hg have less SRP w.r.t. NO3-.
So, V, Fe, Hg can be oxidized by NO3- in aqueous solution.
So, V, Fe, Hg can be oxidized by NO3- in aqueous solution.
Create a free account to view solution
View Solution FreeMore Electrochemistry Questions
The electric charge for electrode deposition of one gram equivalent of a substance is :...The resistance of 1 M – CH3COOH solution is 250 Ω, when measured in a cell of cell constant 125 m−1. The molar conductiv...Which of the following shows maximum molar conductance :-...Most of the copper used to make wire has been electrically refined by depositing it from copper salts solution (divalent...The EoM+3/M2+ values for Cr, Mn, Fe and Co are - 0.41, + 1.57, + 0.77 and + 1.97 V respectively. For which one of these ...