The ionisation constant of ammonium hydroxide is 1.77× 10-5 at 298 K. Hydrolysis constant of ammonium chloride is

Question

The ionisation constant of ammonium hydroxide is 1.77× 10-5 at 298 K. Hydrolysis constant of ammonium chloride is (A)  6.50× 10-12  (B)  5.56× 10-13  (C)  5.65× 10-12  (D)  5.65× 10-10

Tardigrade Admin · Accepted Answer

Kh=(Kw/Kb)=(1× 10-14/1.77× 10-5)=5.65× 10-10

Q. The ionisation constant of ammonium hydroxide is $1.77 \times 10^{- 5}$ at 298 K. Hydrolysis constant of ammonium chloride is

$6.50 \times 10^{- 12}$

$5.56 \times 10^{- 13}$

$5.65 \times 10^{- 12}$

$5.65 \times 10^{- 10}$

$K_{h} = \frac{K _{w}}{K _{b}} = \frac{1 \times 10 ^{- 14}}{1.77 \times 10 ^{- 5}} = 5.65 \times 10^{- 10}$

Q. The ionisation constant of ammonium hydroxide is 1.77×10−5 at 298 K. Hydrolysis constant of ammonium chloride is

6.50×10−12

5.56×10−13

5.65×10−12

5.65×10−10