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Which of the following statement/s is/are correct about weak acids in aqueous solutions? I. When pH = pKa of a monoprotic acid, 50 % of the acid is ionised II. If pH = pKa ₂ of a diprotic acid, the average charge of all the ionised species is 0.5 III. When pH = pKa +1,10 % of the acid is ionised IV. When pH =7,50 % of a monobasic acid is ionised

Options

  1. AI and IV
  2. BI, II and IV
  3. CI, II and IV
  4. DI only

Correct answer

D. I only

Step-by-step solution

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