Electrochemistry questions
1808 published questions with worked solutions.
- Electrolyte can conduct electricity because _______
- The metal that CANNOT be obtained by electrolysis of an aqueous solution of its salts is _________
- Element A (atomic mass 112) and element B (atomic mass 27) form chlorides. Solutions of these chlorides are electrolysed...
- Use of electrolysis is _________ [AFMC 1995]
- The process in which metal surface is made inactive is called ______ [MH CET 2015]
- Zn Zn^ 2+ + 2e^- ; E° = +0.76 V and Fe Fe^ 2+ + 2e^- ; E° = +0.41 V. The e. m. f. for the cell reaction Fe^ 2+ + Zn Zn^ 2+ + Fe...
- During the electrolysis of an electrolyte, the number of ions produced, is directly proportional to the __________ [AFMC 2002]
- A current of 3.7 A is passed for six hours between Ni electrodes in 0.5 L of 2 M solution of Ni(NO_3)_2 . The molarity of...
- A device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as...
- For the electrochemical cell, M|M^+||X^-|X , E^ _ (M^+|M) = 0.44 V and E^ _ (X|X^-) = 0.33 V. From this data one can deduce that...
- A current of 96.5 A is passed for 18 min between nickel electrodes in 800 mL solution of 1 M Ni(NO_3)_2 . The molarity of...
- The molar conductances of NaCl, HCl and CH_3COONa at infinite dilution are 126.45, 426.16 and 91 ohm^ -1 ,cm^2 ,mol^ -1...
- During electrolysis of a solution of AgNO_3 , 9650 coulombs of charge pass through the electroplating bath, the mass of silver...
- A solution of a trivalent metal ion is electrolysed by a current of 5 A for 10 minutes, during this time 1.18 g of metal was...
- Which one of the following will increase the voltage of the cell? Sn_ (s) + 2Ag^+_ (aq) Sn^ 2+ _ (aq) + 2Ag_ (s)
- A solution containing one mole per litre of each Cu(NO_3)_2 , AgNO_3 , Hg_2(NO_3)_2 , Mg(NO_3)_2 is being electrolyzed by using...
- In the electrolysis of aqueous solution of CuSO_4 using copper electrodes, the process that takes place at the anode is _________
- The overall reaction taking place at anode during electrolysis of fused sodium chloride using suitable electrode is _________ [MH...
- On the basis of the electrochemical theory of aqueous corrosion, the reaction occurring at the cathode is __________ [MP PET...
- In which cell the free energy of a chemical reaction is directly converted into electricity?
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