1.

Assertion (A): Aqueous solution of ammonium carbonate is basic. Reason (R) : Acidic/basic nature of a salt solution of a salt of weak acid and weak base depends on K_a and K_b value of the acid and the base forming it.

Answer»

Both ASSERTION and Reason are true and Reason is the CORRECT explanation of Assertion.
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
Assertion is true but Reason is false.
Both Assertion and Reason are false.

Solution :Both assertion and reason are true and reason is the correct explanation of assertion.
`{:((NH_4)_2CO_3 to , 2overset+NH_4+,CO_3^(2-)),(""2H_2O to, 2OH^(-) + , 2H^+),(,darr,darr),(,NH_4OH,N_2CO_3),(,"WEAK base","weak acid"):}`
`K_b` of `NH_4OH gt K_a ` of `H_2CO_3` so solution is BASIC
`K_a` of `H_2CO_3 gt K_b` of `NH_4OH` , the solution is ACIDIC.


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