Question

Write the word equation for the reaction of an alkali with a salt
solution.

Answer 1

answer

Sodium chloride formula is NaCl.

Sodium carbonate formula is Na2CO3

The aqueous solution of sodium chloride is neutral because it is formed from a strong acid and a strong base.

Reaction: NaOH+HCl→NaCl+H2O

The aqueous solution of sodium carbonate is basic because it gets hydrolysed to some extent and forms sodium hydroxide which is a strong base and carbonic acid which is a weak acid.

Reaction of hydrolysis: Na2CO 3+2H2O⇋2NaOH+H 2CO 3

Answer 2

When a concentrated solution of sodium chloride is electrolysed, it decomposes to form sodium hydroxide, chlorine and hydrogen.