Chemistry - Ionic Equilibrium Question with Solution | TestHub

ChemistryIonic EquilibriumMiscellaneous/MixedEasy2 minPYQ_2020
ChemistryEasysingle choice

1M NH4OHand1M HClare mixed to make a total volume of300 mL. IfpHof the mixture is9.26andpKaNH4+=9.26then what would be the volume ratio ofNH4OHandHCl.

Options:

Answer:
A
Solution:



pOH=14-pH=pKb+log⁡x300-2x
=14-9.26=-log⁡10-4.74 +log⁡x300-2x
⇒ x300-2x=1
⇒300=3x⇒x=100 mL
V NH 4 OH V HCl  = 2

Stream:NTA_ABHYASSubject:ChemistryTopic:Ionic EquilibriumSubtopic:Miscellaneous/Mixed
⏱ 2mℹ️ Source: PYQ_2020

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