Question

The number of grams/weight of NH4Cl required to

be added to 3 liters of 0.01M NH3 to prepare the

buffer of pH=9.45 at temperature 298K

(Kb for NH3 is 1.85×10–5)

(A) 3.53 gm (B) 0.354 gm

(C) 4.55 gm (D) 0.455gm​

Answer 1

Note: Check this attachment.