Chemistry - Ionic Equilibrium Question with Solution | TestHub

ChemistryIonic EquilibriumMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasynumerical

The $p K_{a}$ of acetic acid and $p K_{b}$ of $N H_{4} O H$ are 4.75 and 4.75 respectively. Find the pH of ammonium acetate solution?

Answer:

7.00

Solution:

Ammonium acetate is a salt of weak acid and weak base.

So pH is given as

$p H = \frac{1}{2} (p K_{w} + p K_{a} - p K_{b})$

$= \frac{1}{2} (14 + 4.75 - 4.75)$

$= 7$

Stream:NTA_ABHYASSubject:ChemistryTopic:Ionic EquilibriumSubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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