Transcript text: \[
\frac{\ln \left(\frac{\text { high }\left[\mathrm{OH}^{-}\right]}{\text {low }\left[\mathrm{OH}^{-}\right]}\right)}{\ln \left(\frac{\text { slope of proper order plot with high }\left[\mathrm{OH}^{-}\right]}{\text {slope of proper order plot with low }\left[\mathrm{OH}^{-}\right]}\right)}
\]