Electrochemistry questions
1808 published questions with worked solutions.
- The molar conductance of an infinitely dilute solution of ammonium chloride was found to be 185 S cm^2 mol^ -1 and the ionic...
- Given below are two statements : 1 M aqueous solutions of each of Cu(NO₃)₂, AgNO₃, Hg₂(NO₃)₂ ; Mg(NO₃)₂ are electrolysed using...
- The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is
- Given below are the half-cell reactions: Mn^ 2+ + 2e^- Mn ; E^ = -1.18 V 2(Mn^ 3+ + e^- Mn^ 2+ ) ; E^ = +1.51 V The E^ for 3Mn^...
- The equivalent conductance of NaCl at concentration C and at infinite dilution are _C and _ , respectively. The correct...
- Resistance of 0.2 M solution of an electrolyte is 50 Ω. The specific conductance of the solution is 1.4 S m^ -1 . The resistance...
- Galvanization is applying a coating of :
- How long (approximate) should water be electrolysed by passing through 100 amperes current so that the oxygen released can...
- When 9.65 ampere current was passed for 1.0 hour into nitrobenzene in acidic medium, the amount of p-amino-phenol produced is ….....
- The standard Gibbs energy for the given cell reaction in kJ mol^ -1 at 298 K is: Zn(s) + Cu^ 2+ (aq) → Zn^ 2+ (aq) + Cu(s), E° =...
- A solution of Ni(NO_3)_2 is electrolysed between platinum electrodes using 0.1 Faraday electricity. How many mole of Ni will be...
- Consider the statements S1 and S2: S1: Conductivity always increases with decrease in the concentration of electrolyte. S2: Molar...
- If the standard electrode potential for a cell is 2 V at 300 K, the equilibrium constant (K) for the reaction Zn(s) + Cu^ 2+ (aq)...
- The anodic half cell of lead-acid battery is recharged using electricity of 0.05 Faraday. The amount of PbSO_4 electrolyzed in g...
- Given: Co^ 3+ + e^- → Co^ 2+ ; E° = +1.81 V; Pb^ 4+ + 2e^- → Pb^ 2+ ; E° = +1.67 V; Ce^ 4+ + e^- → Ce^ 3+ ; E° = +1.61 V; Bi^ 3+...
- °_m for NaCl, HCl and NaA are 126.4, 425.9 and 100.5 S cm^2 mol^ -1 , respectively. If the conductivity of 0.001 M HA is 5 10^ -5...
- The standard electrode potential E° and its temperature coefficient ( dE° dT ) for a cell are 2 V and -5 10^ -4 VK^ -1 at 300 K...
- Given the equilibrium constant K_C of the reaction Cu(s) + 2Ag^+(aq) → Cu^ 2+ (aq) + 2Ag(s) is 10 10^ 15 , calculate the E°_ cell...
- For the cell Zn(s)|Zn^ 2+ (aq)||M^ x+ (aq)|M(s), different half cells and their standard electrode potentials are given below: |...
- The electrolytes usually used in the electroplating of gold and silver, respectively are:
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