Chemistry - Ionic Equilibrium Question with Solution | TestHub

Calculate the number of moles of$\mathrm{N}{\mathrm{H}}_4\mathrm{C}\mathrm{l}$that should be added to one litre of$\text{1.0}\hspace{0.33em}\mathrm{M}\hspace{0.33em}\mathrm{N}{\mathrm{H}}_4\mathrm{O}\mathrm{H}\hspace{0.33em}$to prepare buffer solution with$\text{pH}\text{=}\text{9}\left[{\text{K}}_{\text{b}}\text{=2}\text{×}{\text{10}}^{-\text{5}}\text{,}\text{take}\text{log}\text{2}\text{=}\text{0}\text{.3}\right]$