Question Number 141150 by jlewis last updated on 16/May/21
![Determine the concentration of[OH^− ] in 0.4M NH_4 OH solution having 5.35g NH_4 Cl in a one(1) litre solution. (k_b =1.8×10^(−5) ,N=14,H=1,Cl=35.5)](Q141150.png)
$$\mathrm{Determine}\:\mathrm{the}\:\mathrm{concentration}\:\mathrm{of}\left[\mathrm{OH}^{−} \right]\: \\ $$$$\mathrm{in}\:\mathrm{0}.\mathrm{4M}\:\mathrm{NH}_{\mathrm{4}} \mathrm{OH}\:\mathrm{solution}\:\mathrm{having}\: \\ $$$$\mathrm{5}.\mathrm{35g}\:\mathrm{NH}_{\mathrm{4}} \mathrm{Cl}\:\mathrm{in}\:\mathrm{a}\:\mathrm{one}\left(\mathrm{1}\right)\:\mathrm{litre}\:\mathrm{solution}. \\ $$$$\left(\mathrm{k}_{\mathrm{b}} =\mathrm{1}.\mathrm{8}×\mathrm{10}^{−\mathrm{5}} ,\mathrm{N}=\mathrm{14},\mathrm{H}=\mathrm{1},\mathrm{Cl}=\mathrm{35}.\mathrm{5}\right) \\ $$$$ \\ $$