(Solved): A buffer is created by mixing equal concentrations of NH4+and NH3. Calculate the volume of th ...

A buffer is created by mixing equal concentrations of ${\mathrm{NH}}_4{}^{+}$and ${\mathrm{NH}}_3$. Calculate the volume of the ${\mathrm{NH}}_3$ solution (in $\mathrm{mL}$ ) needed to create a buffer of $\mathrm{pH}=9.08$ with a total volume of $50\mathrm{mL}$. ${\mathrm{K}}_{\mathrm{b}}\left({\mathrm{NH}}_3\right)=1.80\times 10^{-5}$ Answer to 1 decimal place. Your Answer: Answer What is the $\mathrm{pH}$ of a buffer that is composed of $80\mathrm{mL}$ of $0.10\mathrm{M}{\mathrm{CH}}_3\mathrm{COOH}$ and 109 $\mathrm{mL}$ of $0.10\mathrm{M}{\mathrm{CH}}_3\mathrm{COONa}$ ? $K_a\left({\mathrm{CH}}_3\mathrm{COOH}\right)=1.81\times 10^{-5}$ Answer to 2 decimal places. Your Answer: Answer