Question

Electrolysis of an NaCl solution with a current of 2.00 A for a period of 200 s produced 59.6 mL of Cl2 at 650 mm pressure and 27° C. Calculate the value of the faraday from these data.

Answer 1

Answer:

0.00415F

Explanation:

Given parameters:

Current in the solution = 2A

Time = 200s

Volume of chlorine gas = 59.6mL

Pressure = 650mmHg

Temperature = 27° C

Unknown parameter:

The faraday which is the quantity of electricity used = ?

Solution:

The quantity of electricity used in the reaction is derived from the product of the current passed through the solution and time duration. It is expressed in  coulombs.

      Q = I x t

where I is the current

           t is the time

       Q = 2 x 200 = 400coulombs

 

One faraday is the quantity of electricity produced by one mole of electrons:

      1Faraday = 96500 coulombs

   Therefore 400coulombs gives $\frac{400}{96500}$ = 0.00415F