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Introduction and Degree of Hydrolysis

For a ammoniu...

Question

For a ammonium chloride solution in water, the given equilibrium reaction occur:
$N H_{4}^{+} (a q) + H_{2} O (l) h y d r o l y s i s ⇌ N H_{4} O H (a q) + H^{+} (a q)$
Which of the following describes correct relation ?

K_{h} = \frac{K_{w}}{K_{b}}

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K_{h} = K_{w} \times K_{b}

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K_{h} = \frac{K_{b}}{K_{w}}

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None of the above

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Solution

The correct option is A $K_{h} = \frac{K_{w}}{K_{b}}$
$N H_{4}^{+} (a q) + H_{2} O (l) ⇌ N H_{4} O H (a q) + H^{+} (a q)$

$C 00$ $C - C h C h C h$

In this reaction the $(K_{h})$ hydrolysis constant is:

$K_{h} = \frac{[N H_{4} O H] [H^{+}]}{[N H_{4}^{+}]} = \frac{(C h)^{2}}{C (1 - h)}$

$N H_{4} O H (a q) ⇌ N H_{4}^{+} (a q) + O H^{-} (a q)$

In this reaction the $K_{b}$ constant is:

$K_{b} = \frac{[N H_{4}^{+}] [O H^{-}]}{[N H_{4} O H]}$

$H_{2} O (l) ⇌ H^{+} (a q) + O H^{-} (a q)$

In this reaction the $K_{w}$ constant is:

$K_{w} = [H^{+}] [O H^{-}]$

Using he value of $K_{b} a n d K_{w}$ we can derive the value of $K_{h}$

$∴$ $\frac{K_{w}}{K_{b}} = \frac{[H^{+}] [O H^{-}]}{\frac{[N H_{4}] [O H^{-}]}{[N H_{4} O H]}}$

$\frac{K_{w}}{K_{b}} = \frac{[N H_{4} O H] [H^{+}]}{N H_{4}^{+}}$

$K_{h} = \frac{K_{w}}{K_{b}}$

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Similar questions

Q. For sodium acetate solution in water, the given equilibrium reaction occur:

C H_{3} C O O^{-} (a q) + H_{2} O (l) h y d r o l y s i s ⇌ C H_{3} C O O H (a q) + O H^{-} (a q)

Which of the following describes the correct relation ?
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Q. For a ammonium chloride solution in water, the given equilibrium reaction occur:

N H_{4}^{+} (a q) + H_{2} O (l) h y d r o l y s i s ⇌ N H_{4} O H (a q) + H^{+} (a q)

Which of the following describes correct relation ?

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Which of the following describes the correct relation ?
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Which of the following relation is correct?

Which of the following expressions is correct for the rate of reaction given below? $5 B - r (a q) + B r 0_{3}^{-} (a q) + 6 H^{+} (a q) \to 3 B r_{2} (a q) + 3 H_{2} O (l)$

$(a) \frac{Δ [B r^{-}]}{Δ t} = 5 \frac{Δ [H^{+}]}{Δ t} (b) \frac{Δ [B r^{-}]}{Δ t} = \frac{6}{5} \frac{Δ [H^{+}]}{Δ t} (c) \frac{Δ [B r^{-}]}{Δ t} = \frac{5}{6} \frac{Δ [H^{+}]}{Δ t} (d) \frac{Δ [B r^{-}]}{Δ t} = 6 \frac{Δ [H^{+}]}{Δ t}$

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Introduction and Degree of Hydrolysis

Standard XII Chemistry

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For a ammonium chloride solution in water, the given equilibrium reaction occur: NH+4 (aq)+H2O (l)hydrolysis⇌NH4OH (aq)+H+ (aq) Which of the following describes correct relation ?

For a ammonium chloride solution in water, the given equilibrium reaction occur:
$N H_{4}^{+} (a q) + H_{2} O (l) h y d r o l y s i s ⇌ N H_{4} O H (a q) + H^{+} (a q)$
Which of the following describes correct relation ?