English

State Second Law of Electrolysis - Chemistry

Advertisements
Advertisements

Questions

State second law of electrolysis

State Faraday’s second law of electrolysis

Solution

Second law : It states that when the same amount of electricity is passed through different cells containing different electrolytes and arranged in series, the amount of substances oxidized or reduced at the representive electrode are directly proportional to their chemical equavalent masses

shaalaa.com
  Is there an error in this question or solution?
2013-2014 (March)

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

On calculating the strength of current in amperes if a charge of 840C (coulomb) passes through an electrolyte in 7 minutes, it will be

  • 1
  • 2
  • 3
  • 4

96500 coulombs correspond to the charge on how many electrons?


Following reactions occur at cathode during the electrolysis of aqueous sodium chloride solution:

Na+(aq) + e ⟶ Na (s) E0 =  2.71 V

H+(aq) + e ⟶ `1/2`  H2 (g) E0 = 0.00 V

On the basis of their standard reduction electrode potential (E0) values, which reaction is feasible at the cathode and why?


If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow through the wire?


How much charge is required for the following reduction:

1 mol of \[\ce{Al^{3+}}\] to \[\ce{Al}\]?


How much charge is required for the following reduction:

1 mol of \[\ce{Cu^{2+}}\] to \[\ce{Cu}\]?


A solution of \[\ce{Ni(NO3)2}\] is electrolysed between platinum electrodes using a current of 5 amperes for 20 minutes. What mass of \[\ce{Ni}\] is deposited at the cathode?


Three electrolytic cells A, B, C containing solutions of \[\ce{ZnSO4}\], \[\ce{AgNO3}\] and \[\ce{CuSO4}\], respectively, are connected in series. A steady current of 1.5 amperes was passed through them until 1.45 g of silver deposited at the cathode of cell B. How long did the current flow? What mass of copper and zinc were deposited?


Write any two uses of H2SO4


Explain Faraday’s second law of electrolysis


Write the name of the cell which is generally used in transistors. Write the reactions taking place at the anode and the cathode of this cell.


How many faradays of electricity are required to produce 13 gram of aluminium from aluminium chloride solution? (Given: Molar mass of Al = 27.0-gram mol–1)


 Following reactions occur at cathode during the electrolysis of aqueous copper(II) chloride solution :

On the basis of their standard reduction electrode potential (E°) values, which reaction is feasible at the cathode and why ?


How much quantity of electricity in coulomb is required to deposit 1.346 × 10-3 kg of Ag in 3.5 minutes from AgNO3 solution?
( Given: Molar mass of Ag is 108 × 10-3 kg mol-1 )


Electrolytic cell uses electrical energy to bring about ____________.


In the electrolysis of aqueous sodium chloride solution which of the half cell reaction will occur at anode?


What will happen during the electrolysis of aqueous solution of CuSO4 in the presence of Cu electrodes?

(i) Copper will deposit at cathode.

(ii) Copper will dissolve at anode.

(iii) Oxygen will be released at anode.

(iv) Copper will deposit at anode.


Consider the figure and answer the following question.

Cell ‘A’ has ECell = 2V and Cell ‘B’ has ECell = 1.1V which of the two cells ‘A’ or ‘B’ will act as an electrolytic cell. Which electrode reactions will occur in this cell?


Time Required to deposite one millimole of aluminium metal by the passage of 9.65 ampere through aqueous solution of aluminium is


What is the quantity of electricity in Coulombs required to produce 4.8 g of Mg from molten MgCl2? How much Ca will be produced if the same amount of electricity was passed through molten CaCl2? (Atomic mass of Mg = 24 u, atomic mass of Ca = 40 u).


Through an aqueous solution of an unknown salt of metal M (M = 200 g/mol) a current of 1.93 A is passed for 50 min. If 4 g of metal is produced at cathode. The charge on metal ion in solution is ______.


On passing electricity through nitrobenzene solution, it is converted into azobenzene. The mass of azobenzene is ______ mg, if the same quantity of electricity produces oxygen just sufficient to burn 96 mg of fullerene (C60


Assertion (A): During electrolysis of aqueous copper sulphate solution using copper electrodes hydrogen gas is released at the cathode.

Reason (R): The electrode potential of Cu2+/Cu is greater than that of H+/H2.

Select the most appropriate answer from the options given below:


How much electricity in terms of Faraday is required to produce 40.0 g of \[\ce{Al}\] from molten \[\ce{Al2O3}\]?

(Given: Molar mass of Aluminium is 27 g mol−1.)


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×