Nernst Equation: JEE Questions & Solutions

MX is a sparingly soluble salt that follows the given solubility equilibrium at 298 K. MX(s) M^+(aq) + X^-(aq); Ksp = 10^-10 If the…

Consider the following electrochemical cell at 298 K: Pt | HSnO2^- (aq) | Sn(OH)6^2- (aq) | OH^- (aq) | Bi2O3 (s) | Bi (s) If the reaction…

Consider the following electrochemical cell: Pt | O2(g,1 bar) | HCl(aq) || M^2+(aq,1.0 M) | M(s) The pH above which oxygen gas would start…

In the given electrochemical cell, Ag(s) | AgCl(s) | FeCl2(aq), FeCl3(aq) | Pt(s) at 298 K, the cell potential (Ecell) will increase when:…

Consider the above electrochemical cell where a metal electrode (M) is undergoing redox reaction by forming M^+ (M M^+ + e^-). The cation…

Consider the following redox reaction taking place in acidic medium: BH4^- (aq) + ClO3^- (aq) H2BO3^- (aq) + Cl^- (aq) If the Nernst…

A volume of x mL of 5 M NaHCO3 solution was mixed with 10 mL of 2 M H2CO3 solution to make an electrolytic buffer. If the same buffer was…

Based on the data given below: E^ Cr2O7^2-/Cr^3+ = 1.33 V, E^ Cl2/Cl^- = 1.36 V, E^ MnO4^-/Mn^2+ = 1.51 V, E^ Cr^3+/Cr = -0.74 V. The…

For a Mg Mg^2+(aq) Ag^+(aq) Ag, the correct Nernst Equation is:

The standard reduction potential values of some of the p-block ions are given below. Predict the one with the strongest oxidising capacity.

Consider the following electrochemical cell at standard condition. Au(s) QH2 QHX(0.01 M) Ag(1M) Ag(s) Ecell = +0.4V The couple QH/Q…

1 Faraday electricity was passed through Cu^2+ (1.5 M, 1 L)/Cu and 0.1 Faraday was passed through Ag^+ (0.2 M, 1 L) electrolytic cells.…

Consider the following half cell reaction Cr2O7^2- (aq) + 6e^- + 14H^+ (aq) 2Cr^3+ (aq) + 7H2O(1) The reaction was conducted with the ratio…

The hydrogen electrode is dipped in a solution of pH = 3 at 25^ C. The potential of the electrode will be - x 10^-2 V.

Consider the cell: Pt(s)|H2(g)(1 atm)|H^+(aq,1 M)||Fe^3+(aq),Fe^2+(aq)|Pt(s) Given: E^ Fe^3+/Fe^2+ = 0.771 V, E^ H^+/H2 = 0 V, T = 298 K.…

Pt(s)|H2(g)(1 bar)|H^+(aq)(1 M)||M^3+(aq), M^+(aq)|Pt(s) The Ecell for the given cell is 0.1115 V at 298 K when [M^+(aq)][M^3+(aq)] = 10^a.…

The standard electrode potential (M^3+/M^2+) for V, Cr, Mn, and Co are -0.26 V, -0.41 V, +1.57 V, and +1.97 V, respectively. The metal ions…

Consider the cell Pt(s) H2 (g, 1 atm) H^+ (aq, 1 M) Fe^3+ (aq), Fe^2+ (aq) Pt(s). When the potential of the cell is 0.712 V at 298 K, the…

The electrode potential of the following half cell at 298 K. X X^2+ (0.001 M) Y^2+ (0.01 M) Y is..... 10^-2 V (Nearest integer). Given:…

At what pH, given half cell MnO4^- (0.1 M) | Mn^2+ (0.001 M) will have electrode potential of 1.282 V? (Nearest Integer) Given E^ MnO4^-/…

At 298 K, the standard reduction potential for Cu^2+/ Cu electrode is 0.034 V. Given: Ka, Cu(OH)2 = 1 10^-9. The reduction potential at pH…