Q8 / 125 · BITSAT 2012 · Chemistry

The pOH value of a solution whose hydroxide ion concentration is $6.2 \times 10^{-9} \mathrm{~mol} /$ litre is

  • Correct answer
    A
    8.21
  • B
    6.21
  • C
    7.75
  • D
    7.21

Solution

$-\log (\mathrm{OH})=\mathrm{pOH} ;-\log 6.2 \times 10^{-9}=\mathrm{pOH}$ $\therefore \mathrm{pOH}=8.21$

Hence, the correct answer is option: 'A'.

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