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NEET Chemistry · Medium

Equilibrium: Degree ionisation MCQ

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Degree ionisationMediumQuestion 24082

Question

If a weak acid has Ka = 10−510^{-5} and concentration 0.1 M, [H+^+] is approximately:

  1. A
    10−310^{-3} M
    Correct
  2. B
    10−510^{-5} M
  3. C
    10−210^{-2} M
  4. D
    10−410^{-4} M

Correct answer

10−310^{-3} M

Explanation

10−5×10−1=10−3\sqrt{10^{-5}\times10^{-1}}=10^{-3}.

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