Electrochemistry questions
1808 published questions with worked solutions.
- Consider the following E^ values E^ _ Fe^ 3+ /Fe^ 2+ = 0.77 V E^ _ Sn^ 2+ /Sn = -0.14 V Under standard conditions the potential...
- The standard e.m.f of a cell, involving one electron change is found to be 0.591 V at 25^ . The equilibrium constant of the...
- The limiting molar conductivities ^ for NaCl, KBr and KCl are 126,152 and 150 S cm^2 mol^ -1 respectively. The ^ for NaBr is
- In a cell that utilises the reaction Zn(s) + 2H^+(aq) Zn^ 2+ (aq) + H_2(g) addition of H_2SO_4 to cathode compartment, will
- The highest electrical conductivity of the following aqueous solutions is of
- Aluminium oxide may be electrolysed at 1000^ to furnish aluminium metal (Atomic mass = 27 amu; 1 Faraday = 96, 500 Coulombs). The...
- Electrolyte: KCl, KNO_3, HCl, NaOAc, NaCl with ^ (S cm^2mol^ -1 ): 149.9, 145.0, 426.2, 91.0, 126.5. Calculate ^ _ HOAc Using...
- The molar conductivities ^ _ NaOAc and ^ _ HCl at infinite dilution in water at 25°C are 91.0 and 426.2 S cm²/mol respectively....
- Given the data at 25°C, Ag + I^- AgI + e^-; E^ = 0.152 V Ag Ag^+ + e^-; E^ = -0.800 V What is the value of K_ sp for AgI ? (2.303...
- Resistance of a conductivity cell filled with a solution of an electrolyte of concentration 0.1M is 100Ω. The conductivity of...
- The cell, Zn|Zn^ 2+ (1M)||Cu^ 2+ (1M)|Cu (E^0_ cell = 1.10 V), was allowed to be completely discharged at 298 K. The relative...
- The equivalent conductances of two strong electrolytes at infinite dilution in H_2O (where ions move freely through a solution)...
- Given E^ _ Cr^ 3+ /Cr = -0.72 V, E^ _ Fe^ 2+ /Fe = -0.42 V. The potential for the cell Cr|Cr^ 3+ (0.1M)||Fe^ 2+ (0.01M)|Fe is
- Given : E^ _ Fe^ 3+ /Fe = -0.036 V, E^ _ Fe^ 2+ /Fe = -0.439 V. The value of standard electrode potential for the change, Fe^ 3+...
- The Gibbs energy for the decomposition of Al_2O_3 at 500°C is as follows : 23Al_2O_3 43Al + O_2, _rG = +966 kJ mol^ -1 The...
- The correct order of E^0_ M^ 2+ /M values with negative sign for the four successive elements Cr, Mn, Fe and Co is
- The reduction potential of hydrogen half cell will be negative if :
- What is the SI unit for electrochemical equivalent?
- NaCl shows Schottky defects and AgCl Frenkel defects. Their electrical conductivity is due to _____
- Which one of the following reaction is possible at anode?
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