ABC26PH0695 · A concentration cell with two hydrogen electrodes at two different pressures is depicted as H2(g)(Pt)\;\; pH2=p1 \;|\; HCl(aq) \;|\… · 2001-2022
ABC26PH0975 · The molar conductivities at infinite dilution 0 for Na2 SO4, K2 SO4, KCl, HCl and HCOONa at 300 K are 260, 308, 150, 426 and… · JUNE 2012
ABC26PH0053 · The correct value of E , of a half cell in the following graph of E vs m (molality) is: · JUNE 2012
ABC26PH0391 · The activity (M) of Mn2+ ion in the above solution is · 2005-2021
ABC26PH0696 · MnO4-(aq)+Zn(s)+H3 O+(aq) Mn2+(aq)+Zn2+(aq)+H2 O(l) For the above reaction if the equilibrium constant at 298 K is represented by 10x, then… · 2001-2022self-practice
ABC26PH0976 · The correct value of E , of a half cell in the following graph of E vs m (molality) is: · JUNE 2012
ABC26PH0697 · The concentration of K+ion inside a biological cell is 20 times higher than outside. The magnitude of potential difference between the two… · 2001-2022
ABC26PH0054 · The Daniel cell is · DEC 2012self-practice
ABC26PH0698 · The standard reduction potentials of the Fe3+ / Fe2+ and Fe2+ / Fe couples are 0.77 and -0.44 V , respectively. The standard reduction… · 2001-2022self-practice
ABC26PH0056 · The equilibrium constant for an electrochemical reaction, 2\,Fe3++Sn2+ 2\,Fe2++Sn4+ is [Eo_Fe3+/Fe2+=0.75\,V,\ Eo_Sn4+/Sn2+=0.15\,V;\… · DEC 2012self-practice
ABC26PH0395 · For a 1 molal aqueous NaCl solution, the mean ionic activity coefficient ( )and the Deby-Huckel Limiting Law constant (A) are related as · 2005-2021
ABC26PH0980 · The equilibrium constant for an electrochemical reaction, is [ left[E_Fe3+/Fe2+o=0.75,mathrmV, E_Sn4+/Sn2+o=0.15,mathrmV… · DEC 2012
ABC26PH0701 · The standard reduction potentials of Ce4+ / Ce3+ and Fe3+ / Fe2+ are 1.44 and 0.77 V , respectively. The 10 K ( K is the equilibrium… · 2001-2022self-practice
ABC26PH0398 · For the following reaction 2MnO4-+5H2C2O4+6H+ 2Mn2++8H2O+10CO2 E0(MnO4-/Mn2+)=+1.51\,V and E0(CO2/H2C2O4)=-0.49\,V. At 298 K, the… · 2005-2021
ABC26PH0399 · A sparingly soluble electrolyte M2 X ionizes as M2 X 2 M++X2-. The solubility product (Ksp ), molal solubility (S) and molal activity… · 2005-2021self-practice
ABC26PH0704 · The mean ionic activity coefficient for a 0.01 M aqueous solution of Ca3(PO4)2 is ____ (Round off to three decimal places) (Given: 10 =… · 2001-2022self-practice
ABC26PH0705 · For the reaction, CuSO4(aq) + Zn(s) ZnSO4(aq) + Cu(s), the value of Delta G (in kJ\,mol-1) is ____ (Round off to the nearest integer)… · 2001-2022self-practice
ABC26PH0985 · In a potentiometric titration, the end point is obtained by observing · DEC 2013
ABC26PH0401 · The value of e (KSP ) for Fe(OH)3 at 298 K is · 2005-2021
ABC26PH0986 · Electrolysis of an aqueous solution of 1.0 M NaOH results in · DEC 2013
ABC26PH0402 · A platinum electrode is immersed in a solution containing 0.1 M Fe2+ and 0.1 M Fe3+. Its potential is found to be 0.77 V against SHE. Under… · 2005-2021self-practice
ABC26PH0987 · The cell voltage of Daniel cell [Zn |ZnSO4(aq) \| CuSO4(aq) | Cu ] is 1.07 V. If reduced potential of Cu2+ Cu is 0.34 V, the reduction… · DEC 2013
ABC26PH0403 · Given the E0 values for the following reaction sequence, Mn6+ 1.28 V Mn5+ 2.9 V Mn4+ 0.96 Mn3+ 1.5 V Mn2+ the computed value of E0 for Mn6+… · 2005-2021self-practice
ABC26PH0988 · Consider the cell: 3 equilibrium constant for the reaction: Zn+2 Fe3+ Zn2++2 Fe2+ at 25 C would be close to · DEC 2013
ABC26PH0404 · The expression for the equilibirum constant (Keq ) for the enzyme catalyzed reaction given below, is E+S k2k1 ES k4k3 P+E · 2005-2021
ABC26PH0405 · The solubility product of AgBr(s) is 5 10-13 at 298 K . If the standard reduction potential of the half-cell, E_Ag AgBr(s) Br-0 is 0.07 V… · 2005-2021self-practice
ABC26PH0407 · The limiting currect (in mu A ) from the reduction of 3 10-4 M Pb2+, using a dropping mercury electrode (DMF) with characteristics, m=3.0… · 2005-2021self-practice
ABC26PH0992 · Given; arrayl A. Fe(OH)2(s) + 2e- Fe(s) + 2OH-(aq) \ ;\ E0=-0.877\,V \\ B. Al3+(aq) + 3e- Al(s) \ ;\ E0=1.66\,V \\ C. AgBr(aq) + e- Ag(s) +… · JUNE 2014
ABC26PH0409 · The mobility of a univalent ion in aqueous solution is 6.00 10-8 m2 s-1 V-1 at 300 K . Its diffusion coefficient at 300 K is X 10-9 m2 s-1… · 2005-2021self-practice
ABC26PH0994 · Fuel cells provide clean electrical energy to a variety of applications including automobiles and stationary power sources. Normally… · DEC 2014self-practice
ABC26PH0410 · The ionic activity coefficients of Ca2+ and F-are 0.72 and 0.28 , respectively. The mean activity coefficient of CaF2 is ____ (up to two… · 2005-2021self-practice
ABC26PH0411 · The diffusion limiting current (Id ) at a dropping mercury electrode for an aqueous Mg (II) solution of concentration 'c' (mol L-1 ) is 300… · 2005-2021self-practice
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 · 2005-2021self-practice
ABC26PH0996 · The temperature-dependence of an electrochemical cell potential is · JUNE 2015
ABC26PH0413 · The Latimer diagrma of oxygen is given below. The value of x is ____ V. (Upto two decimal places) · 2005-2021self-practice
ABC26PH0063 · Given that Eo (Cl2/Cl- )=1.35\,V and Ksp(AgCl)=10-10 at 25, E0 corresponding to the electrode reaction 1/2Cl2(g)+Ag+(Soln.)+e- AgCl(s) is… · DEC 2015
ABC26PH0416 · The activity of ' m ' molal CuSO4 solution can be expressed in terms of its mean activity coefficient ( )as: · 2005-2021self-practice
ABC26PH1000 · Given that E (Cl2 / Cl- )=1.35 V and Ksp(AgCl)=10-10 at 25 C, E0 corresponding to the electrode reaction 1/2 Cl2(g)+Ag+(Soln. )+e- AgCl(s) · DEC 2015
ABC26PH0065 · In a potentiometric titration, the end point is characterised by · JUNE 2016self-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… · 2005-2021self-practice
ABC26PH0420 · A 5 V battery delivers a steady current of 1.5 A for a period of 2 h. The total charge tht has passed through the circuit is ____ Coulombs. · 2005-2021self-practice
ABC26PH0067 · Given (i)\ Zn+4NH3 Zn(NH3)42++2e, Eo=1.03\,V (ii)\ Zn Zn2++2e, Eo=0.763\,V the formation constant of the complex Zn(NH3)42+ is approximately · DEC 2016
ABC26PH1008 · Given : (i) Zn+4 NH3 Zn (NH3 )4 2++2 e, E0=1.03 V (ii) Zn Zn2++2 e, E =0.763 V the formation of the complex Zn (NH3 )4 2+ is approximately · DEC 2016
ABC26PH1010 · The electrochemical cell potential (E), after the reactants and products reach equilibrium, is (E0 . is the standard cell potential and n… · 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 reaction is… · 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… · JUNE 2017