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Which statement is correct about Faraday’s Laws of Electrolysis? Statement 1: After his extensive investigations on electrolysis of solutions and melts of electrolytes, Faraday published his results during 1833-34 in the form of well known Faraday’s two laws of electrolysis. Statement 2: He used a coulometer (a standard electrolytic cell) for determining the quantity of electricity passed from the amount of metal (generally silver or copper) deposited or consumed. 

Which statement is correct about Faraday’s Laws of Electrolysis? Statement 1: After his extensive investigations on electrolysis of solutions and melts of electrolytes, Faraday published his results during 1833-34 in the form of well known Faraday’s two laws of electrolysis. Statement 2: He used a coulometer (a standard electrolytic cell) for determining the quantity of electricity passed from the amount of metal (generally silver or copper) deposited or consumed.  Correct Answer Both are correct

The correct answer 3 i.e. Both are correct.

Quantitative aspects of electrolysis:

  • Michael Faraday was the first scientist who described the quantitative aspects of electrolysis. 
  • Faraday’s Laws of Electrolysis:
  • ​After his extensive investigations on electrolysis of solutions and melts of electrolytes, Faraday published his results during 1833-34 in the form of the following well known Faraday’s two laws of electrolysis:
    • First Law: The amount of chemical reaction which occurs at any electrode during electrolysis by a current is proportional to the quantity of electricity passed through the electrolyte (solution or melt).
    • Second Law: The amounts of different substances liberated by the same quantity of electricity passing through the electrolytic solution are proportional to their chemical equivalent weights (Atomic Mass of Metal ÷ number of electrons required to reduce the cation).
  • There were no constant current sources available during Faraday’s times. 
  • The general practice was to put a coulometer (a standard electrolytic cell) for determining the quantity of electricity passed from the amount of metal (generally silver or copper) deposited or consumed. 
  • However, coulometers are now obsolete and we now have constant current (I) sources available and the quantity of electricity Q, passed is given by
             Q = It
    Q is in coloumb when I is in ampere and t is in second.
  • The amount of electricity (or charge) required for oxidation or reduction depends on the stoichiometry of the electrode reaction. 
    • For example, in the reaction:
            Ag +(aq) + e– → Ag(s) 
      One mole of the electron is required for the reduction of one mole of silver ions.

Related Questions

Which of the following statement is correct about Faraday’s Laws of Electrolysis? First Law: The amount of chemical reaction which occurs at any electrode during electrolysis by a current is proportional to the quantity of electricity passed through the electrolyte (solution or melt). Second Law: The amounts of different substances liberated by the same quantity of electricity passing through the electrolytic solution are proportional to their chemical equivalent weights (Atomic Mass of Metal ÷ number of electrons required to reduce the cation).
Two electrolytic cells with CuSO4 and AgNO3 solutions are connected in series to a power source. If after 10 minutes the weight of copper (atomic weight 63.5) deposited in the first cell is 63.5 gms, the corrosponding weight of silver (atomic weight 108) deposited in the second cell is . . . . . . . . gms.
The electricity bill of a certain establishment is partly fixed and partly varies with the number of units of electricity consumed. In a certain month when 540 units are consumed, the bill is Rs. 1,800. In another month the consumed units are 620 and the bill is Rs. 2,040. If 500 units of electricity is consumed in a month, the bill for that month is
Divya has 1500 coins which are in the combination of gold and silver in the ratio of 5 ∶ 7. She distributed the silver coins among his three sons Nimesh, Monil and Gaurav in the ratio of 7 ∶ 12 ∶ 6. If Gaurav and Monil combined 60% of their silver coins and made jewelry from it and sell the remaining silver coins at Rs. 500 per coin, then the amount earned from selling of silver coin was distributed between Monil and Gaurav in the ratio of 12 ∶ 13. Find the difference between the amount earned by Gaurav and Monil from the silver coin transaction.
An electrolytic refining cell for copper consists of an alloy with activity of copper acu = 0.8 as the anode, and pure copper as the cathode. What is the absolute value of the cell potential (in millivolts) at 25°C, given that copper is divalent? Faraday constant is 96500 C/mol and the universal gas constant is 8.314 J/(mol.K).
During the process of electrolysis, when the same quantity of electricity is passed through different electrolytes, the mass of substances deposited is proportional to:
Which among the following statements is/are true? Exposure of silver chloride to sunlight for a long duration turns grey due to 1. the formation of silver by decomposition of silver chloride 2. sublimation of silver chloride 3. decomposition of chlorine gas from silver chloride 4. oxidation of silver chloride Select the correct answer using the codes given below.
An electric bus has onboard instruments that report the total electricity consumed since the start of the trip as well as the total distance covered. During a single day of operation, the bus travels on stretches M, N, O and P, in that order. the cumulative distances travelled and the corresponding electricity consumption are shown in the Table below: Stretch Cumulative distance(km) Electricity used (kWh) M 20 12 N 45 25 O 75 45 P 100 57 The stretch where the electricity consumption per km is minimum is 
Which statement is correct about the electrolytic cells? Statement 1: In an electrolytic cell, an external source of voltage is used to bring about a chemical reaction.  Statement 2: This is the basis for an industrial process in which impure copper is converted into copper of high purity.
Given below are two statements, one labelled as Assertion (A), and the other labelled as Reason (R). Assertion (A): In the medieval period the dam was as much an index of the value of copper, as the rupee was of silver. Interestingly the regional price variations attained a much greater importance in the case of copper metal than in that of gold or silver. Reason (R): The main supplies were from the mines of the northern and eastern slopes of the Aravalli and the Vindhyan ranges. The proximity to these could play a large part in determining the extent of differences in price among various markets. In the context of the above two statements which of the following is correct ?