Question

Write the chemical equation involved in the preparation of sodium hydroxide. name the process

Answer 1

Electrolysis of brine solution (NaCl) gives NaOH.

At anode -
2Cl ^- -----> Cl2 + 2 electrons

At cathode -
2H+ + 2 electrons ------> H2

In the solution, Na+ + OH- ------> NaOH

This process is known as Chlor alkali process

Hope This Helps You!

Answer 2

Hi there !

Common salt = NaCl [ sodium chloride]
Aqueous solution of NaCl is called - brine.

Electrolysis of brine , leads to the formation of sodium hydroxide (NaOH)

             electricity
NaCl ----------------> NaOH + H₂ + Cl₂

Here , in the electrolysis of brine , sodium hydroxide [ alkali , that is water soluble base] and chlorine gas is formed.
Hence this process is known as chlor-alkali process

Chlor - chlorine
Alkali - sodium hydroxide