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The pKb value for aqueous ammonia at 25


is 4.8.


What is the correct pKa value for the ammonium ion at this temperature? (Kb denotes the base dissociation constant and Ka denotes the acid dissociation constant.)

Answer :

The value of pka for [tex]NH_3[/tex] in an aqueous solution is 9.2.

What is Kb?

Kb denotes the base dissociation constant.

pKa + pKb =14  at 25 degree celcius.

pKa + 4.8 =14

pKa = 9.2

pKb is the negative base-10 logarithm of the base dissociation constant (Kb) of a solution.

It is used to determine the strength of a base or alkaline solution.

The value of pka for [tex]NH_3[/tex] in an aqueous solution is 9.2.

Learn more about pka here:

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