Nernst Equation

JEE Main Chemistry · Electrochemistry · 22 questions, latest first

• One half cell in a voltaic cell is constructed by dipping silver rod in AgNO_3 solution of unknown concentration, other half cell…20265 April, Shift 2 · Q57
• An electrochemical cell, consist of the following two redox couples, M^x+ (aq) / M(s)[E_red^Θ=+0.15 V] and Fe^3+(aq) /…20264 April, Shift 2 · Q73
• A volume of x mL of 5 M NaHCO_3 solution was mixed with 10 mL of 2 M H_2 CO_3 solution to make an electrolytic buffer. If the…202628 January, Shift 2 · Q73
• In the given electrochemical cell, Ag(s)|AgCl(s)| FeCl_2(aq), FeCl_3(aq) ∣ Pt(s) at 298 K, the cell potential (E_cell ) will…202623 January, Shift 1 · Q57
• Consider the following electrochemical cell: Pt|O_2( g)(1 bar)| HCl(aq)||M^2+(aq, 1.0 M)| M( s). The pH above which, oxygen gas…202622 January, Shift 2 · Q72
• Consider the following electrochemical cell at 298 K Pt|HSnO_2^-(aq)| Sn(OH)_6^2-(aq)|OH^-(aq)| Bi_2 O_3( s) ∣ Bi(s). If the…202622 January, Shift 1 · Q72
• MX is a sparingly soluble salt that follows the given solubility equilibrium at 298 K. MX( s) ⇌ M^+(aq)+X^-(aq); K_sp=10^-10 If…202621 January, Shift 2 · Q74
• Consider the following half cell reaction Cr_2 O_7^2-(aq)+6 e^-+14 H^+(aq) → 2 Cr^3+(aq)+7 H_2 O(1) The reaction was conducted…20258 April, Shift 2 · Q75
• 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) / Ag…20257 April, Shift 1 · Q71
• Consider the following electrochemical cell at standard condition. Au(s)|QH_2, Q| NH_4 X(0.01 M)| | Ag^+(1 M) ∣ Ag(s) E_cell…20252 April, Shift 1 · Q71
• For a Mg|Mg^2+(aq)||Ag^+(aq)| Ag the correct Nernst Equation is:202529 January, Shift 1 · Q57
• The emf of cell Tl| (0.001 M)Tl^+|| (0.01 M)Cu^2+| Cu is 0.83 V at 298 K. It could be increased by:20248 April, Shift 2 · Q63
• What pressure (bar) of H_2 would be required to make emf of hydrogen electrode zero in pure water at 25°C?20244 April, Shift 1 · Q65
• The potential for the given half cell at 298 K is ( - ) ____ × 10^-2 V. 2 H_(aq)^++2 e^- → H_2( g); [H^+]=1 M, P_H_2=2 atm…20241 February, Shift 1 · Q85
• The hydrogen electrode is dipped in a solution of pH=3 at 25^° C. The potential of the electrode will be - ____ × 10^-2 V.…202427 January, Shift 2 · Q84
• At 298 K, the standard reduction potential for Cu^2+ / Cu electrode is 0.34 V. Given: K_sp Cu(OH)_2=1 × 10^-20 Take (2.303…202313 April, Shift 2 · Q86
• At what pH, given half cell MnO_4^-(0.1 M) ∣ Mn^2+(0.001 M) will have electrode potential of 1.282 V? ____ (Nearest Integer)…20231 February, Shift 1 · Q56
• 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…202330 January, Shift 2 · Q55
• Consider the cell Pt_(s)|H_2( 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…202330 January, Shift 1 · Q57
• Pt(s)|H_2(g)(1 b a r)| H^+(a q)(1 M) ∥ M^3+(a q), M^+(a q) ∣ Pt(s) The E_cell for the given cell is 0.1115 V at 298 K when…202325 January, Shift 2 · Q55
• Consider the cell Pt(s)|H_2( g)(1 atm)| H^+(aq,[H^+]=1) ∥ Fe^3+(aq), Fe^2+(aq) ∣ Pt(s) Given E_Fe^3+ / Fe^2+^°=0.771 V and E_H^+…202325 January, Shift 1 · Q56
• At 298 K, a 1 litre solution containing 10 mmol of Cr_2 O_7^2- and 100 mmol of Cr^3+ shows a pH of 3.0. Given: Cr_2 O_7^2- →…202324 January, Shift 1 · Q56