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Question: Answered & Verified by Expert
The pOH value of a solution whose hydroxide ion concentration is $6.2 \times 10^{-9} \mathrm{~mol} /$ litre is
ChemistryIonic EquilibriumBITSATBITSAT 2012
Options:
  • A 8.21
  • B 6.21
  • C 7.75
  • D 7.21
Solution:
2243 Upvotes Verified Answer
The correct answer is: 8.21
$-\log (\mathrm{OH})=\mathrm{pOH} ;-\log 6.2 \times 10^{-9}=\mathrm{pOH}$
$\therefore \mathrm{pOH}=8.21$

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