Given
\[
\begin{array}{l}
\mathrm{HF}+\mathrm{H}_{2} \mathrm{O} \stackrel{\mathrm{K}_{\mathrm{a}...
Given
\[
\begin{array}{l}
\mathrm{HF}+\mathrm{H}_{2} \mathrm{O} \stackrel{\mathrm{K}_{\mathrm{a}}}{\longrightarrow} \mathrm{H}_{3} \mathrm{O}^{+}+\mathrm{F}^{-} \\
\mathrm{F}^{-}+\mathrm{H}_{2} \mathrm{O} \stackrel{\mathrm{K}_{\mathrm{b}}}{\longrightarrow} \mathrm{HF}+\mathrm{OH}^{-}
\end{array}
\]
Which of the following reaction is correct
(a) \( K_{b}=K_{w} \)
(b) \( K_{b}=\frac{1}{K_{w}} \)
(c) \( K_{a} \times K_{b}=K_{w} \)
(d) \( \frac{K_{a}}{K_{b}}=K_{w} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live
Other Videos By PW Solutions
| 2022-12-13 | The \( \mathrm{pK}_{\mathrm{a}} \) of a weak acid (HA) is \( 4.5 \). The \( \mathrm{pOH} \) of a... |
| 2022-12-13 | The \( \mathrm{pK} \mathrm{a}_{\mathrm{a}} \) of a weak acid, \( \mathrm{HA} \), is \( 4.80 \). ... |
| 2022-12-13 | \( \mathrm{H}_{2} \mathrm{~S} \) gas when passed through a solution of cations containing \( \ma... |
| 2022-12-13 | A salt ' \( \mathrm{X} \) ' is dissolved in water of \( \mathrm{pH}=7 \). The salt is made resul... |
| 2022-12-13 | For a polybasic acid, the dissociation constants have a different values for each step, e.g.,
\[... |
| 2022-12-13 | \( K_{a_{1}}, K_{a_{2}} \) and \( K_{a_{3}} \) are the respective ionisation constants for the f... |
| 2022-12-13 | In qualitative analysis, in III group \( \mathrm{NH}_{4} \mathrm{Cl} \) is added before \( \math... |
| 2022-12-13 | Calculate the \( \mathrm{pH} \) of a solution obtained by diluting \( 1 \mathrm{~mL} \) of \( 0.... |
| 2022-12-13 | At \( 298 \mathrm{~K} \) a \( 0.1 \mathrm{M} \mathrm{CH}_{3} \mathrm{COOH} \) solution is \( 1.3... |
| 2022-12-13 | The dissociation constant of two acids \( H A_{1} \) and \( H A_{2} \) are \( 3.14 \times 10^{-4... |
| 2022-12-13 | Given
\[
\begin{array}{l}
\mathrm{HF}+\mathrm{H}_{2} \mathrm{O} \stackrel{\mathrm{K}_{\mathrm{a}... |
| 2022-12-13 | Which of the following \( \mathrm{p} K_{\mathrm{a}} \) value represents the strongest acid?
(a) ... |
| 2022-12-13 | An acid/ base dissociation equilibrium is dynamic involving a transfer of proton in forward and ... |
| 2022-12-13 | At \( 25^{\circ} \mathrm{C} \), the dissociation constant of a base, \( \mathrm{BOH} \), is \( 1... |
| 2022-12-13 | The first and second dissociation constants of an acid \( \mathrm{H}_{2} \mathrm{~A} \) are \( 1... |
| 2022-12-13 | The ionisation constant of an acid, \( K_{a} \), is the measure of strength of an acid. The \( K... |
| 2022-12-13 | Which of the following has highest \( \mathrm{pH} \) ?
(a) \( \frac{\mathrm{M}}{4} \mathrm{KOH} ... |
| 2022-12-13 | A monobasic weak acid solution has a molarity of \( 0.005 \) and \( \mathrm{pH} \) of 5 . What i... |
| 2022-12-13 | The \( \mathrm{pH} \) of \( 0.005 \) molar solution of \( \mathrm{H}_{2} \mathrm{SO}_{4} \) is a... |
| 2022-12-13 | What is the \( \mathrm{H}^{+} \)ion concentration of a solution prepared by dissolving \( 4 \mat... |
| 2022-12-13 | Calculate the pOH of a solution at \( 25^{\circ} \mathrm{C} \) that contains \( 1 \times 10^{-10... |
0