Why is sodium sulphite basic? Please include the equation.
Why is sodium sulphite basic?
Please include the equation.
Homework Answers
Sodium sulphite is a salt of strong base (NaOH ) and weak acid (sulphurous acid i.e H2SO3 ) .
So, the aqueous solution of sodium sulphite is basic in nature.
This basic nature of sodium suphite is due to the presence of excess hydroxide ions on hydrolysis with water . This can be shown in form of reaction as
SO32- + H2O 
HSO3- + OH-
as it is evident from above equation that the aqueos solution of Na2SO3 is basic in nature
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