Question

State as to why
a solution of Na2CO3 is alkaline?​

Answer 1

A solution of Na2CO3 is alkaline because of the following reasons:

⇒ Na2CO3 is a salt of weak acid, carbonic acid (H2CO3) and a strong base, sodium hydroxide (NaOH)

⇒ Therefore, it undergoes hydrolysis to produce strong base and hence its aqueous solution is alkaline in nature.

Answer 2

Answer:

Na2CO3 is alkaline or basic because we know that all metallic oxides are basic in nature. Since Na is a metal and Na2CO3 is formed by,

NaO+CO2------》Na2CO3

Some basic nature of NaO still exists in Na2CO3, so it is said to be alkaline.

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