# Question 00c91

Jul 18, 2017

See below

#### Explanation:

There are three possible steps for calculating the $\text{pH}$ of a basic solution.

1) Calculate $\left[{\text{OH}}^{-}\right]$. For a strong base, this will be the concentration of the base. For a weak base, use ["OH"^-] = sqrt ("K"_"b" xx ["BOH"]).

2) Calculate $\text{pOH}$ or $\left[{\text{H}}^{+}\right]$. Either use "pOH" = -log["OH"^-] or ["H"^+] = ("K"_"w")/(["OH"^-])

3) Calculate $\text{pH}$. Either use $\text{pH" = 14-"pOH}$ or "pH" = -log["H"^+]#