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Question
The ionisation constant of ammonium hydroxide is 1.77 × 10−5 at 298 K. Hydrolysis constant of ammonium chloride is:
Options
5.65 × 10−10
6.50 × 10−12
5.65 × 10−13
5.65 × 10−12
MCQ
Solution
5.65 × 10−10
Explanation:
For hydrolysis of salt,
Hydrolysis constant,
kh = `"k"_"w"/"k"_"b"`
= `(1 xx 10^-14)/(1.77 xx 10^-15)`
= 5.65 × 10−10
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Ionization of Acids and Bases - Hydrolysis of Salts and the Ph of Their Solutions
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