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Olympiad workbook

Exam: Olympiad workbook
Subject: NSEC
Chapter: Ionic Equilibrium

Olympiad workbook · NSEC · Ionic Equilibrium

Which of the following statement/s is/are correct about weak acids...

Which of the following statement/s is/are correct about weak acids in aqueous solutions? I. When

\mathrm{pH}=\mathrm{pKa}

of a monoprotic acid,

50 \%

of the acid is ionised II. If

\mathrm{pH}=\mathrm{pKa}_2

of a diprotic acid, the average charge of all the ionised species is 0.5 III. When

\mathrm{pH}=\mathrm{pKa}+1,10 \%

of the acid is ionised IV. When

\mathrm{pH}=7,50 \%

of a monobasic acid is ionised

Options

AI and IV
BI, II and IV
CI, II and IV
DI only

Correct answer

D. I only

Step-by-step solution

No Solution

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