Calculation of Current Strength for Liberating Chlorine from Sodium Chloride Solution

Given:
Mass of chlorine to be liberated = 10g
Time taken for liberation = 1 hour

Formula:
The formula for calculating the current strength required to liberate a given mass of an element is given by Faraday's law of electrolysis.
The formula is I = (m/z)×(1/t)×(F)

Where,
I = Current strength in Amperes
m = Mass of the element to be liberated
z = Number of electrons involved in the reaction
t = Time taken for the liberation of the element
F = Faraday's constant (96,485 Coulombs per mole)

Calculation:
To find the current strength required to liberate 10g of chlorine from sodium chloride solution in one hour, we need to follow the below steps:

1. Identify the chemical reaction involved in the process of chlorine liberation.
The chemical reaction involved in the process of chlorine liberation is:
2NaCl + 2H2O → 2NaOH + Cl2↑ + H2↑

2. Identify the number of electrons involved in the reaction.
From the above reaction, we can see that two electrons are involved in the reaction.

3. Calculate the number of moles of chlorine to be liberated.
The molar mass of chlorine is 35.5 g/mol.
Therefore, the number of moles of chlorine to be liberated is:
n = m/M = 10/35.5 = 0.28169 mol

4. Calculate the current strength using the formula.
I = (m/z)×(1/t)×(F)
Substituting the given values in the formula, we get:
I = (0.28169/2)×(1/3600)×(96485)
I = 7.55 A

Therefore, the current strength required to liberate 10g of chlorine from sodium chloride solution in one hour is 7.55 Amperes.