What is chlor-alkali process? Why is it called so? Identify the products formed
at the cathode and anode. Write necessary chemical equation. Write one use of
each product in this reaction.
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1. The chlor alkali process is the process when electricity is passed through an aqueous solution of NaCl (brine) it decomposes to form NaOH.
2. It is called so because of the products formed: chlor for chlorine and alkali for sodium hydroxide.
3. Hydrogen is given off at cathode and chlorine gas at annode.
4. Chemical equation :
2NaCl(aq) + 2H2O(l) = 2NaOH(aq) + Cl2(g) + H2(g)
5. Use of H2: fuels , margarine etc
Cl2: Water treatment, swimming pools etc.
NaOH: De- greasing metals, soaps and detergents etc.
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