Electrochemistry

ABC26PH0974 · The overall reaction for the passage of 1.0 faraday of charge in the following cell Ag(s)-AgCl(s) | KCl(a1) | KCl(a2) | AgCl(s)-Ag(s) is… · DEC 2011 self-practice

ABC26PH0055 · Kohlrausch's law is applicable to a dilute solution of · DEC 2012 self-practice

ABC26PH0979 · Kohlrausch's law is applicable to a dilute solution of · DEC 2012

ABC26PH0982 · If the concentration (c) is increased to 4 times its original value (c), the change in molar conductivity for strong electrolytes is (where… · JUNE 2013

ABC26PH0703 · The limiting molar conductivity of La3+ and Cl^- ions in aqueous medium at 298 K are 209.10 × 10-4 and 76.35 × 10-4 S m2 mol-1… · 2001-2022 self-practice

ABC26PH0058 · The limiting molar conductivities of NaCl, NaI and RbI are 12.7, 10.8 and 9.1 mS m2 mol-1, respectively. The limiting molar conductivity of… · DEC 2013

ABC26PH0989 · The limiting molar conductivities of NaCl, NaI and RbI are 12.7, 10.8 and 9.1 mS m2 mol-1, respectively. The limiting molar conductivity of… · DEC 2013

ABC26PH0061 · Conductometric titration of a strong acid with a strong alkali (MOH) shows linear fall of conductance up to neutralization point because of · JUNE 2015

ABC26PH0997 · Conductometric titration of a strong acid with a strong alkali (MOH) shows linear fall of conductance up to neutralization point because of · JUNE 2015

ABC26PH0062 · In Kohlrausch law, Lambda m= Lambda mo- kappa √(c), Lambda mo and kappa · DEC 2015

ABC26PH0998 · In Kohlrausch law, Lambda m= Lambda m0- kappa √(c), Lambda mo and kappa · DEC 2015

ABC26PH1006 · The ionic mobilities of NH4+and HCO3-are 6 × 10-4 V-1 s-1 and 5 × 10-4 V-1 s-1, respectively. The transport numbers of NH4+and HCO3-are… · DEC 2016

ABC26PH1011 · The specific conductance of a solution is 0.176 Omega -1 cm-1. If the cell constant is 0.255 cm-1, the conductance (Omega -1) of that… · JUNE 2017

ABC26PH1028 · For weak electrolyte like acetic acid, the relation among conductance (lambda), equilibrium constant (K) and concentration (C) can be… · JUNE 2021

ABC26PH0051 · For an aqueous solution at 25°C, the Debye-Huckel limiting law is given by · JUNE 2011 self-practice

ABC26PH0968 · 1.0 ohm-1 dm2 mol-1, respectively, the solubility (in g L-1) of the salt in water at 25°C is · JUNE 2011

ABC26PH0694 · The molality of (NH4)2SO4 solution that has the same ionic strength as 1 mol kg-1 solution of KCl is · 2001-2022

ABC26PH0392 · According to the Debye – Huckel limiting law, the mean activity coefficient of 5 × 10-4 mol kg-1 aqueous solution of CaCl2 at 25°C is (the… · 2005-2021

ABC26PH0057 · The potential in Debye-Hückel theory is proportional to · DEC 2012

ABC26PH0981 · The potential in Debye-Huckel theory is proportional to · DEC 2012

ABC26PH0706 · The mean ionic activity coefficient of 0.004 molal CaCl2 in water at 298 K (rounded off to thre decimal places) is ________. (Given… · 2001-2022 self-practice

ABC26PH0991 · Solutions of three electrolytes have the same ionic strength and different dielectric constants as 4, 25 and 81. The corresponding relative… · JUNE 2014

ABC26PH0999 · The concentration of a MgSO4 solution having the same ionic strength as that of a 0.1 M Na2SO4 solution is · DEC 2015

ABC26PH1005 · Two aqueous 1 : 1 electrolyte systems A and B are at different temperatures TA and TB and CA and CB concentrations, respectively. Their… · JUNE 2016

ABC26PH1007 · The ionic strength of a solution containing 0.008 M AlCl3 and 0.005 M KCl is · DEC 2016

ABC26PH0076 · The electrolyte solution that has the smallest Debye-length at 298 K is · DEC 2019

ABC26PH1024 · The electrolyte solution that has the smallest Debye-length at 298 K is · DEC 2019

ABC26PH1029 · The amount of Ba(NO3)2 (molecular weight 261.32 amu) required to be added to 500 g of a 0.11 mol kg-1 solution of KNO3 in order to raise… · JUNE 2021

ABC26PH0383 · In the reversible chamical reaction taking place under standard condition at 298 K and 1 atm in a Daniel cell, Zn |Zn2+(aq) | |Cu2+(aq) |… · 2005-2021

ABC26PH0688 · Given that Eo_Fe2+/Fe = -0.44 V and Eo_Fe3+/Fe2+ = 0.77 V, the Eo_Fe3+/Fe is : · 2001-2022 self-practice

ABC26PH0385 · Aqueous solution of sodium chloride (chi NaCl = 0.015) at 298 K is in equilibrium with a water vapour pressure (in torr) of · 2005-2021 self-practice

ABC26PH0970 · If the ratio of composition of oxidized and reduced species in electrochemical cell, is given as ([0])/([R])=e2 the correct potential… · JUNE 2011

ABC26PH0386 · Average value of enthalpy of vaporisation (in kJ/mol) of water between 363 and 373 K is · 2005-2021

ABC26PH0691 · Consider the following redox system. Q + 2H^+ + 2e^- ⇌ QH2 E° = 0.699 V Calculate the pH of the solution at 298 K, if the redox potential… · 2001-2022 self-practice

ABC26PH0388 · For a redox reaction, Cd2+ + 2e^- ⇌ Cd, the (Ep)anodic observed in cyclic voltametry at hanging mercury drop electrode is –650 mV vs. SCE… · 2005-2021 self-practice

ABC26PH0389 · Given that E0(Fe3+, Fe) = -0.04 V and E0(Fe2+, Fe) = -0.44 V, the value of E0(Fe3+, Fe2+) is: · 2005-2021 self-practice

ABC26PH0052 · The molar conductivities at infinite dilution Lambda mo for Na2 SO4, K2 SO4, KCl, HCl and HCOONa at 300 K are 260,308,150,426 and 105 S… · JUNE 2012 self-practice

ABC26PH0390 · In the mixture obtained by mixing 25.0 mL 1.2 × 10-3 M MnCl2 and 35.0 mL of 6.0 × 10-4 M KCl solution, the concentrations (M) of Mn2+, K^+… · 2005-2021 self-practice

ABC26PH0695 · A concentration cell with two hydrogen electrodes at two different pressures is depicted as H2(g)(Pt) (pH2 = p1) | HCl(aq) | H2(g)(Pt) (pH2… · 2001-2022

ABC26PH0053 · The correct value of E°, of a half cell in the following graph of E vs log m (molality) is: log m · JUNE 2012

ABC26PH0391 · The activity (M) of Mn2+ ion in the above solution is · 2005-2021

ABC26PH0696 · MnO4^-(aq) + Zn(s) + H3O^+(aq) → Mn2+(aq) + Zn2+(aq) + H2O(l) For the above reaction if the equilibrium constant at 298 K is represented by… · 2001-2022 self-practice

ABC26PH0697 · The concentration of K^+ ion inside a biological cell is 20 times higher than outside. The magnitude of potential difference between the… · 2001-2022

ABC26PH0054 · The Daniel cell is · DEC 2012 self-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 potential… · 2001-2022 self-practice

ABC26PH0978 · The Daniel cell is · DEC 2012

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 2012 self-practice

ABC26PH0395 · For a 1 molal aqueous NaCl solution, the mean ionic activity coefficient (gamma ±)and the Deby-Huckel Limiting Law constant (A) are related… · 2005-2021

ABC26PH0980 · The equilibrium constant for an electrochemical reaction, is [E_Fe3+/Fe2+o=0.75 V, E_Sn4+/Sn2+o=0.15 V; 2.303RT/F=0.06 V] · DEC 2012

ABC26PH0701 · The standard reduction potentials of Ce4+/Ce3+ and Fe3+/Fe2+ are 1.44 and 0.77 V, respectively. The log 10 K (K is the equilibrium… · 2001-2022 self-practice