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Chemistry - Ionic Equilibrium Question with Solution | TestHub

ChemistryIonic EquilibriumBuffer solutionEasy2 minPYQ_2020

ChemistryEasysingle choice

A buffer solution contains equal concentration of $X^{-}$ and $H X$ . The $k_{b}$ for $X^{-}$ is $1 0^{- 10}$ . The $p H$ of the buffer solution is

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Answer:

Solution:

$p_{O H} = {pK}_{b} + l o g \frac{[s a l t]}{[b a s e]}$

$p_{O H} = 10 + l o g \frac{[H X]}{[X^{-}]}$

$[H X] = [X^{-}]$

$L o g 1 = 0$

$pOH = 10$

$p H + pOH = p K_{w}$

$p H = 4$ .

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Ionic EquilibriumSubtopic:Buffer solution

⏱ 2mℹ️ Source: PYQ_2020

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