Chemistry - Ionic Equilibrium Question with Solution | TestHub

ChemistryIonic EquilibriumTitration Based ProblemsMedium2 minQB

ChemistryMediumnumerical

Passage / Comprehension

Following is the titration curve of two weak monoprotic acids HA and HB (5 milli-moles each) in 50 ml aqueous solution titrated against aqueous solution of strong base NaOH (0.1 M) in two different experiments :

[Given : log 2 = 0.3]

What is $pK_{a}$ value for acid HB ?

Answer:

5.00

Solution:

$pH = pKa + lo g \frac{[ B ^{-} ]}{[ HB ]}$

$5 = pKa$

Stream:JEESubject:ChemistryTopic:Ionic EquilibriumSubtopic:Titration Based Problems

⏱ 2mℹ️ Source: QB

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