Question

How can you prepare sodium hydroxide? Name the products formed on cathode and anode.Write one use of each by-product formed in the above reaction. PLZ ANSWER FAST!!

Answer 1

Answer:

METHOD OF PREPRATION OF SODIUM HYDROXIDE - DEFINITION

It is generally prepared by electrolysis of sodium chloride in Castner-kellner cell. A brine solution is electrolyzed using mercury cathode and carbon anode. Sodium metal, discharged at the cathode, combine with mercury to form sodium amalgam. Cl gas is evolved at the cathode. The amalgam is treated with water to give sodium hydroxide and hydrogen gas.

Reactions:

2Na/Hg+2H

2

O→2NaOH+H

2

+Hg

Explanation:

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