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 fitted… · 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+(a q)+Br-(a q) Is closest to. [Eo (AgBr / Ag, Br- )=0.07 V ; Eo (Ag / Ag+ )=0.80 V… · 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… · 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… · DEC 2018
ABC26PH1017 · Conductivities of water and a saturated solution of a sparingly soluble salt AB2 are 7 and 21 mu S m-1, respectively. Given _A2+0=12.72 mS… · DEC 2017
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
ABC26PH1018 · The equilibrium constant of the following reaction: Sn(s)+Sn4+(aq) 2 Sn2+(aq) At 300 K is closest to, (Given : E_Sn4+ / Sn2+o=0.15 V and… · JUNE 2018
ABC26PH1019 · The mobility of a divalent cation in water is 8 10-8 m2 V-1 S-1. The effective radius of the ion is (viscosity of water =1 cP ; e=1.6 10-19… · 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 ( J0.6J0.5 ) of the… · JUNE 2019
ABC26PH1021 · The cell potential (in V) of a Ag / AgCl / KCl electrode connected to the standard hydrogen electrodeat 298 K is closest to (Given E_ (AgCl… · DEC 2019
ABC26PH1022 · In common glass electrode, alkaline error caused at pH>10 is least for · DEC 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 ( E_ cell is the cell potential and m is molality of ideal… · DEC 2019
ABC26PH1026 · An aqueous solution contains 0.02 mol kg-1 NaCl and 0.03 mol kg-1 Ca (NO3 )2. The logarithm of mean ionic activity coefficient ( )of this… · DEC 2019
ABC26PH1027 · For the cell Cd |CdCl2 \| AgCl | Ag ; E_ cell o=0.675 V and dE_ cell o / dT=-6.5 10-4 VK-1 at 27 C. The Delta H (kJ mol-1 ) value for the… · JUNE 2021
Electrode Kinetics
ABC26PH0074 · If the overpotential of an electrolysis process is increased from 0.5 V to 0.6 V , then the ratio of current densities ( J0.6J0.5 ) of the… · JUNE 2019self-practice
Nernst Cells
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 complex is · 2005-2021self-practice
ABC26PH0689 · The statement that is correct for both electrochemical (galvanic) cells and electrolytic cell is : · 2001-2022
ABC26PH0690 · The standard potential of a Daniel cell is +1.10 V and the equilibrium constant for the cell reaction is 1.5 1037. It can be concluded that · 2001-2022
ABC26PH0387 · Given the standard potential for the following half-cell reaction at 298 K arrayll Cu+(aq)+e- Cu(s) & E0=0.52\,V \\ Cu2+(aq)+e- Cu+(aq) &… · 2005-2021
ABC26PH0972 · For a potentiometric titration, in the curve of emf (E) vs volume (V) of the titrant added, the equivalence point is indicated by · DEC 2011
ABC26PH0693 · For a cell reaction, E\,(at\ 25) = 1.26\,V, n=2 and = -96.5\,J\,K-1\,mol-1. Calculate E at 85 by assuming to be independent of temperature… · 2001-2022self-practice
ABC26PH0973 · The standrad electrode potentials (E ) of Fe3+ / Fe2+ and Fe2+ / Fe electrodes are +0.77 V and -0.44 V respectively at 300 K . The E of… · DEC 2011
ABC26PH0977 · The correct Nernst equation for the concentration cell: Pt |H2(p) | HCl (a )1|AgCl(s)| Ag \| Ag|AgCl(s)| HCl (a )2|H(p)| Pt without liquid… · JUNE 2012
ABC26PH0394 · The standard reduction potentials at 298 K for single electrodes are given below: From this we can infer that · 2005-2021self-practice
ABC26PH0699 · An electrochemical cell consists of two half-cell reactions arrayl AgCl(s) + e- Ag(s) + Cl-(aq) \\ Cu(s) Cu2+(aq) + 2e- array The mass of… · 2001-2022
ABC26PH0700 · For a cell reaction, Pb(s)+Hg2 Cl2(s) PbCl2(s)+2 Hg(l), (( E)/( T) )P is 1.45 10-4 VK-1. The entropy change (in J mol-1 K-1 ) for the… · 2001-2022self-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- Hg2Cl2Hg is 0.7530 V. The standard potential of the calomel electrode is… · 2005-2021self-practice
ABC26PH0702 · The emf of a standard cadmium cell is 1.02 V at 300 K. The temperature coefficient of the cell is -5.0 10-5\,V\,K-1. [1\,F =… · 2001-2022self-practice
ABC26PH0984 · Which is correct Nernst equation for redox reaction O+n e ? · JUNE 2013
ABC26PH0993 · For the cell reaction, Sn(s)+Sn4+(aq) 2 Sn2+(aq), separate electrode reactions could be written with the respective standard electrode… · DEC 2014
ABC26PH0059 · The correct Delta G for the cell reaction involving steps arrayl Zn(s) Zn2+(aq)+2e \\ Cu2+(aq)+2e Cu(s) array is · JUNE 2015self-practice
ABC26PH0995 · The correct Delta G for the cell reaction involving steps arrayl Zn(s) Zn2+(aq) + 2e \\ Cu2+(aq) + 2e Cu(s) array · JUNE 2015
ABC26PH0415 · Consider the electrochemical cell M(s)|MI2(s)|MI2(aq)|M(s) where 'M' is a metal. At 298 K, the standard reduction potential are… · 2005-2021self-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 ____… · 2005-2021self-practice
ABC26PH1001 · The standard EMF of the cell Pt, H.g HCl soln. AgCls, Ag(s) · DEC 2015
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\,. 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
Polarography Voltammetry
ABC26PH0418 · The CORRECT 'voltage (E) versus time' excitation signal used in cyclic voltammetry is · 2005-2021self-practice
ABC26PH1030 · Consider following terms. Identify those which are relevant to d.c. polarography A. Thermal current B. Supporting electrolyte C… · JUNE 2021