Electrochemistry

ABC26PH0060 · The temperature-dependence of an electrochemical cell potential is · JUNE 2015

ABC26PH0412 · The temperature derivative of electrochemical potential E at constant pressure, ((∂ E)/(∂ T))P is given by · 2005-2021 self-practice

ABC26PH0996 · The temperature-dependence of an electrochemical cell potential is · JUNE 2015

ABC26PH0063 · Given that Eo(Cl2/Cl^-) = 1.35 V and Ksp(AgCl) = 10-10 at 25°C, Eo corresponding to the electrode reaction 1/2Cl2(g) + Ag^+(Soln.) + e^- →… · DEC 2015

ABC26PH0065 · In a potentiometric titration, the end point is characterised by · JUNE 2016 self-practice

ABC26PH1002 · In a potentiometric titration, the end point is characterised by · JUNE 2016

ABC26PH0419 · In an electrochemical cell, Ag^+ ions in AgNO3 are reduced to Ag metal at the cathode and Cu is oxidized to Cu2+ at the anode. A current of… · 2005-2021 self-practice

ABC26PH0067 · Given (i) Zn + 4NH3 → Zn(NH3)42+ + 2e, Eo = 1.03 V (ii) Zn → Zn+2 + 2e, E0 = 0.763 V the formation constant of the complex Zn(NH3)42+ is… · DEC 2016

ABC26PH1008 · Given : (i) Zn + 4NH3 → Zn(NH3)42+ + 2e, E0 = 1.03 V (ii) Zn → Zn+2 + 2e, E° = 0.763 V the formation of the complex Zn(NH3)42+ is… · DEC 2016

ABC26PH1010 · The electrochemical cell potential (E), after the reactants and products reach equilibrium, is (E0 is the standard cell potential and n is… · JUNE 2017

ABC26PH1012 · The standard cell potential for the reaction Zn(s) + Cu2+(aq) ⇔ Zn2+(aq) + Cu(s) is +1.10 V. The Gibbs free energy change during the… · JUNE 2017

ABC26PH0069 · The standard cell potential of cell, Pt | H2(g) | HBr(aq) | AgBr(s) | Ag(s), was measured over a range of temperatures, and the data was… · JUNE 2017

ABC26PH1014 · The standard cell potential of cell, Pt | H2(g) | HBr(aq) | AgBr(s) | Ag(s), was measured over a range of temperatures, and the data was… · JUNE 2017

ABC26PH0070 · The correct statement among the following is · DEC 2018

ABC26PH1015 · The correct statement among the following is · DEC 2017

ABC26PH0071 · The standard free energy of the reaction AgBr(s) → Ag^+(aq) + Br^-(aq) Is closest to. [Eo(AgBr/Ag, Br^-) = 0.07 V; Eo(Ag/Ag^+) = 0.80 V; F… · DEC 2018

ABC26PH1016 · The standard free energy of the reaction AgBr(s) → Ag+(aq) + Br-(aq) Is closest to. [E°(AgBr/Ag,Br-) = 0.07 V; E°(Ag/Ag+) = 0.80 V; F =… · DEC 2017

ABC26PH0072 · Conductivities of water and a saturated solution of a sparingly soluble salt AB2 are 7 and 21 mu S m-1, respectively. Given, lambda o_A2+ =… · DEC 2018

ABC26PH0073 · The equilibrium constant of the following reaction: Sn(s) + Sn4+(aq) ⇌ 2Sn2+(aq) At 300 K is closest to, (Given, Eo_Sn4+/Sn2+ = 0.15 V and… · DEC 2018

ABC26PH1019 · The mobility of a divalent cation in water is 8×10-8m2V-1s-1. The effective radius of the ion is (viscosity of water =1cP; e=1.6×10-19C) · JUNE 2019

ABC26PH1020 · If the over potential of an electrolysis process is increased from 0.5V to 0.6V, then the ratio of current densities (ln J0.6/J0.5) of the… · JUNE 2019

ABC26PH0075 · For the electrochemical cell Ag|AgCl|MCl(0.01 M)|MCl(0.02 M)|AgCl|Ag, the junction potential is the highest when M^+ is · DEC 2019

ABC26PH1023 · For the electrochemical cell Ag | AgCl | MCl (0.01 M) | MCl (0.02 M) | AgCl | Ag, the junction potential is the highest when M^+ is · DEC 2019

ABC26PH1025 · The E0(M^+/M) of the cell, SHE | MX | M can be obtained from the plot of (Ecell is the cell potential and m is molality of ideal dilute… · DEC 2019

ABC26PH1027 · For the cell Cd | CdCl2 || AgCl | Ag; E°cell = 0.675 V and dE°cell/dT = -6.5 × 10-4 V K-1 at 27°C. The Delta H (kJ mol-1) value for the… · JUNE 2021

ABC26PH0074 · If the overpotential of an electrolysis process is increased from 0.5 V to 0.6 V, then the ratio of current densities (ln J0.6/J0.5) of the… · JUNE 2019 self-practice

ABC26PH0384 · If standard emf of the cell, Cu | Cu2+(aq) | [Cu(NH3)4]2+, aq.NH3 | Cu is 0.35, then stability constant of the formation cupric amine… · 2005-2021 self-practice

ABC26PH0689 · The statement that is correct for both electrochemical (galvanic) cells and electrolytic cell is : · 2001-2022

ABC26PH0699 · An electrochemical cell consists of two half-cell reactions AgCl(s) + e^- → Ag(s) + Cl^-(aq); Cu(s) → Cu2+(aq) + 2e^- The mass of copper… · 2001-2022

ABC26PH0700 · For a cell reaction, Pb(s) + Hg2Cl2(s) → PbCl2(s) + 2Hg(l), ((∂ Eo)/(∂ T))P is 1.45 × 10-4 V K-1. The entropy change (in J mol-1 K-1) for… · 2001-2022 self-practice

ABC26PH0396 · For the concentration cell M | M^+(aq, 0.01 mol dm-3) || M^+(aq, 0.1 mol dm-3) | M the EMF (E) of the cell at a temperature (T) equals · 2005-2021

ABC26PH0397 · At 298 K, the EMF of the cell pt | H2 (1 bar) | H^+(solution) || Cl^- | Hg2Cl2 Hg is 0.7530 V. The standard potential of the calomel… · 2005-2021 self-practice

ABC26PH0064 · The standard EMF of the cell Pt, H2(g) | HCl(soln.) | AgCl(s), Ag(s) · DEC 2015

ABC26PH0417 · At 25°C, the emf (in volts, rounded off to three decimal places) of the cell, Ag|AgBr(s)|Br^-(a=0.20), Cu2+(a=0.48), Cu^+(a=0.24)|Pt is… · 2005-2021 self-practice

ABC26PH1004 · The standard electrode potential E0 at a fixed temperature and in a given medium is dependent on · JUNE 2016

ABC26PH0068 · A solution of Fe3+ is titrated potentiometrically using Ce3+ solution at 25 °C. The emf (in V) of the redox system thus formed when, (i)… · JUNE 2017

ABC26PH1013 · A solution of Fe3+ is titrated potentiometrically using Ce3+ solution at 25°C. The emf (in V) of the redox system thus formed when, (i) 50%… · JUNE 2017