If the pH of the solution is 9 its OH− ions concentration is:

Correct answer: A. 10−5

  • A. 10−5
  • B. 5
  • C. 10−9
  • D. 9

Explanation

As we know that,pH+pOH=14pOH=14-9=5Also, pOH=log[OH-][OH-]=antilog(pOH)[OH]=antilog (5)[OH]=10-5

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