ABC26PH0971 · Which one of the following conductometric titrations will show a linear increase of the conductance with volume of the titrant added up to… · DEC 2011
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 2011self-practice
ABC26PH0055 · Kohlrausch's law is applicable to a dilute solution of · DEC 2012self-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, respectively. The… · 2001-2022self-practice
ABC26PH0400 · For the determination of solubility product (KSP) of Fe(OH)3, the appropriate cell representation and its emf are, respectively. · 2005-2021
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… · 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
ABC26PH0990 · In the graph below, the correct option, according to Kohlrausch law, is · JUNE 2014
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, =- √(c), and · DEC 2015
ABC26PH0414 · The molar conductivity of a 0.01 M weak acid (HX) at 298K, measured in a conductivity cell with cell constant of 0.4 cm-1, is 64.4 Scm2… · 2005-2021self-practice
ABC26PH0998 · In Kohlrausch law, =0- √(c), and · 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
Debye Huckel
ABC26PH0051 · For an aqueous solution at 25°C, the Debye-Huckel limiting law is given by · JUNE 2011self-practice
ABC26PH0968 · If the specific conductances of a sparingly soluble (1:1) salt (MW =200\,g\,mol-1) in its saturated aqueous solution at 25 and that of… · 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 is (the… · 2005-2021
ABC26PH0393 · According to the Debye-Hückel limiting law, if the concentration of a dilute aqueous solution of KCl is increased 4 fold, the value of in… · 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 three decimal places) is ____. (Given… · 2001-2022self-practice
ABC26PH0406 · The mean ionic activity coefficient of 0.001 molal ZnSO4(aq) at 298 K according to the Debye-Huckel limiting law is (Debye-Huckel constant… · 2005-2021self-practice
ABC26PH0991 · Solutions of three electrolytes have the same ionic strength and different dielectric constants as 4 , 25 and 81 . The corresponding… · 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 Debye… · 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
Electrochemistry – General
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 E_Fe2+ / Feo=-0.44 V and E_Fe3+ / Fe2+o=0.77 V, the E_Fe3+ / Feo is : · 2001-2022self-practice
ABC26PH0969 · Debey-Hückel screening length (-1 ) is a measure of size of diffuse ion cloud around an ion, provided 2 e2 NA0 kB T 30 (nm molkg -1 )-1 at… · JUNE 2011
ABC26PH0385 · Aqueous solution of sodium chloride (=0.015 ) at 298 K is in equilibrium with a water vapour pressure (in torr) of · 2005-2021self-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+2 H++2 e- QH2 E =0.699 V Calculate the pH of the solution at 298 K , if the redox potential of the… · 2001-2022self-practice
ABC26PH0692 · The Zn2+ Zn half cell (E = -0.762\,V) is connected to a Cu2+ Cu half cell (E = 0.340\,V). What is the value of E for spontaneous conversion… · 2001-2022self-practice
ABC26PH0388 · For a redox reaction, Cd2++2 e- Cd, the (Ep )_ anodic observed in cyclic voltametry at hanging mercury drop electrode is -650 mV vs. SCE… · 2005-2021self-practice
ABC26PH0389 · Given that E0 (Fe3+, Fe )=-0.04 V and E0 (Fe2+, Fe )=-0.44 V, the value of E0 (Fe3+, Fe2+ ) is: · 2005-2021self-practice
ABC26PH0052 · The molar conductivities at infinite dilution for Na2 SO4, K2 SO4, KCl, HCl and HCOONa at 300 K are 260,308,150,426 and 105 S cm-1 mol-2… · JUNE 2012self-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+and… · 2005-2021self-practice