At 25^ ^ ^ CK_ a of HPO_4 ^ 2- and HSO_3 ^ - are 4.8 × 10^ -13 and 6.3 × 10^ -8 respectively. Which of the following is correct?

Correct answer: C. HPO_4 ^ 2- is a weaker acid than HSO_3 ^ - and PO_4 ^ 3- is a stronger base than SO_3 ^ 2- No Solution

Olympiad workbook

Olympiad workbook · NSEC · Ionic Equilibrium

At 25^ ^ ^ CK_ a of HPO_4 ^ 2- and HSO_3 ^ - are 4.8 × 10^ -13 and...

25^{{}^{{}^{\circ}}} \mathrm{CK}_{\mathrm{a}}

\mathrm{HPO}_4{ }^{2-}

and

\mathrm{HSO}_3{ }^{-}

are

4.8 \times 10^{-13}

and

6.3 \times 10^{-8}

respectively. Which of the following is correct?

A $\mathrm{HPO}_4{ }^{2-}$ is a stronger acid than $\mathrm{HSO}_3{ }^{-}$ and $\mathrm{PO}_4{ }^{3-}$ is a weaker base than $\mathrm{SO}_3{ }^{2-}$
B $\mathrm{HPO}_4{ }^{2-}$ is a weaker acid than $\mathrm{HSO}_3{ }^{-}$ and $\mathrm{PO}_4{ }^{3-}$ is a weaker base than $\mathrm{SO}_3{ }^{2-}$
C $\mathrm{HPO}_4{ }^{2-}$ is a weaker acid than $\mathrm{HSO}_3{ }^{-}$ and $\mathrm{PO}_4{ }^{3-}$ is a stronger base than $\mathrm{SO}_3{ }^{2-}$
D $\mathrm{HPO}_4{ }^{2-}$ is a stronger acid than $\mathrm{HSO}_3{ }^{-}$ and $\mathrm{PO}_4{ }^{3-}$ is a stronger base than $\mathrm{SO}_3{ }^{2-}$

C. $\mathrm{HPO}_4{ }^{2-}$ is a weaker acid than $\mathrm{HSO}_3{ }^{-}$ and $\mathrm{PO}_4{ }^{3-}$ is a stronger base than $\mathrm{SO}_3{ }^{2-}$

No Solution