Electrochemistry questions
1808 published questions with worked solutions.
- If 9650 coulombs of electricity is passed through a copper sulphate solution, the number of moles of copper deposited will be...
- The number of electrons required to reduce 4.5 10^ -5 g of aluminium is _________ [MH CET 2009]
- Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 milli ampere current. The time required to liberate...
- The weight of silver (atomic weight = 108) displaced by a quantity of electricity which displaces 5600 mL of O_2 at STP will be...
- The resistance of 0.01 N NaCl solution at 25℃ is 200 Ω. Cell constant of conductivity cell is 1 cm^ -1 . The molar conductance is...
- Resistance of 0.2 M solution of an electrolyte is 50 Ω. The conductance of the solution is 1.4 S ,m^ -1 . The resistance of 0.5 M...
- The molar conductivity is maximum for the solution of concentration ________
- The limiting molar conductivities ^ for NaCl, KBr and KCl are 126, 152 and 150 S ,cm^ 2 ,mol^ -1 respectively. The ^ for NaBr is...
- Which of the following conducts electricity? [AFMC 1995]
- If 0.5 amp current is passed through acidified silver nitrate solution for 10 minutes. The mass of silver deposited on cathode,...
- An aqueous solution of copper sulphate is electrolysed. The atomic mass of the copper, if the electrochemical equivalent is 3.29...
- When same quantity of electricity is passed for half an hour. The amount of Cu and Cr deposited are respectively 0.375 g and 0.30...
- The atomic weight of Fe is 56. The weight of Fe deposited from FeCl_3 solution by passing 0.6 faraday of electricity is _________
- One gram of which of the following compound will require maximum amount of electricity for its decomposition?
- At 18℃, the conductance of H^+ and CH_3COO^- at infinite dilution are 315 and 35 mho ,cm^2 ,eq^ -1 respectively. The molar...
- Aluminium oxide may be electrolysed at 1000℃ to furnish aluminium metal (At. Mass = 27 amu; 1 Faraday = 96,500 Coulombs). The...
- Given l/a = 0.5 cm^ -1 , R = 50 ohm, M = 1.0. The molar conductance of the electrolytic cell is _______ [Orissa JEE 2005]
- Standard reduction potential of Au^ 3+ /Au and Sn^ 4+ /Sn^ 2+ electrodes are 1.5 V and 0.15 V respectively. The net reaction is...
- Consider the following cell reaction: 2Fe_ (s) + O_ 2(g) + 4H^+_ (aq) 2Fe^ 2+ _ (aq) + 2H_2O_ (l) , E° = 1.67 V. At [ Fe^ 2+ ] =...
- The electrode where de-electronation takes place acts as ________ [MH CET 2001]
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