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Question: Answered & Verified by Expert
pH of 0.1 M BOH  (weak base) is found to be 12. The solution at temperature T K will display an osmotic pressure equal to:
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Options:
  • A 0.01 RT
  • B 0.01RT2
  • C 0.11 RT
  • D 1.1 RT
Solution:
1836 Upvotes Verified Answer
The correct answer is: 0.11 RT
pH=12, pOH=14-12=2,

OH-=10-2=0.1 α

or α=0.1

i=1+n-1α=1+2-1 × 0.1=1.1

π=iCRT=1.1 × 0.1 RT=0.11 RT

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