Question

Based on the properties and composition of buffer solutions,what will be the pH of this buffer solution if 3.5 g NH₄OH (M (NH₄OH) = 35 g / mol) and 5.35 g NH₄Cl (M (NH₄Cl) = 53.5 g / mol) are dissolved in 1 l of water? pKb = 4.75

Answer 1

Moles of NH₄OH $=\frac{3.5}{35}=0.1moles$

Moles of NH₄Cl$=\frac{5.35}{53.5}=0.1moles$