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At 25^(@)C, the value of ionisation cons...

At `25^(@)C`, the value of ionisation constant of a weak monobasic acid, HA is `1.6xx10^(-4)`. What is the degree of ionisation of HA in its 0.1(M) aqueous solution?

Text Solution

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Degree of ionisation of weak monobasic acid `(alpha)=sqrt((K_(alpha))/(c))`.
Given, `c=0.1(M) and K_(a)=1.6xx10^(-4)`
The degree of ionisation of HA in its 0.1(M) aqueous solution`=sqrt((K_(a))/(c))=sqrt((1.6xx10^(-4))/(0.1))=0.04`.
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