FARADAY CONSTANT

 Faraday Constant:

It is defined as amount of charge required to deposit one gram equivalent of any substances. It amounts to 96500C.

Relation of Faraday Constant with Electrochemical equivalent and Chemical equivalent.

Derive Relation of Faraday Constant with Electrochemical equivalent and Chemical equivalent.

96500C deposits one gram equivalent or E mass of any substance.

1C deposits E/96500 of any substance.

Since, Electrochemical equivalence is defined by mass of substance deposited when 1C is passed through electrolytic solution.

Thus,

E.C.E (z)=E/96500

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Solution of Faraday Constant Related Numerical Problems 

Numerical Problem# 1

1.How many coloumbs are required to produce:

i.27 g of silver from AgNO3?

ii.50g of Aluminium from Al2O3?

Numerical Problem# 2

How many coloumbs are required to produce:

i.80g of Calcium from molten CaCl2?

ii.50g of Aluminium from Al2O3?

Numerical Problem# 3

How many coloumbs are required to produce 50 g of Al when electrode reaction is:

(Atomic mass of Al=27)? (Same as 1)

Numerical Problem# 4

How many coloumbs are required to deposit 126g of Cu from CuSO4 solution? (atomic mass of Cu=63.5)

Numerical Problem# 5

How many coloumbs are required to deposit 33g of CaCl2?

Numerical Problem# 6

Calculate the number of coloumbs are required to deposit 40g of aluminium from molten  Al2O3.

Numerical Problem# 7

How many coloumbs of electric charge are required to deposit?

i.4.6 g of sodium

ii.3 mole aluminium

Numerical Problem#8

How many coulombs are required to produce:

i.80g of aluminium from molten Al2O3?

ii.24g of magnesium from MgCl2?

Numerical Problem# 9

9. Calculate: How many gram of Cr will be plated out by 2400 coulomb?

Numerical Problem# 10

How many number of coulombs are required to deposit 81g of Aluminium when the electrode reaction is:

Numerical Problem# 11

Convert the following:

i.Charge of 4.0 X 10¹²electrons into coulombs.

ii.Chemical equivalent of magnesium into Electro chemical equivalent.

Numerical Problem# 12

12.How many coulombs of electricity are required to discharge 0.1 mole of Na^+? [1F=96500C]

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This site provides notes on different chapters of Chemistry of Grade XI and XII (NEB Board). Also, it posts number of blogs on Collection of past questions and solution. Conversion chart, rules, Chemical test are some additional features.

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