Solutions of sodium salts of the acids in the following table are prepared with an initial concentration of 0.500 M. Which solution will have the highest pH and be the least acidic? $$\begin{array} { c c }
\text { Acid } & \mathbf { p } K _ { \mathbf { a } } \
\text { HA } & 4.00 \
\text { HB } & 7.00 \
\text { HC } & 10.00 \
\text { HD } & 11.00
\end{array}$$

Question

Solutions of sodium salts of the acids in the following table are prepared with an initial concentration of 0.500 M. Which solution will have the highest pH and be the least acidic? $$\begin{array} { c c } 
\text { Acid } & \mathbf { p } K _ { \mathbf { a } } \
\text { HA } & 4.00 \
\text { HB } & 7.00 \
\text { HC } & 10.00 \
\text { HD } & 11.00
\end{array}$$

Quizplus · Accepted Answer

The solution with the highest pH will be the one with the weakest conjugate acid, which corresponds to the acid with the highest pKa value. HD has the highest pKa (11.00), making NaD the least acidic and having the highest pH.

Solutions of Sodium Salts of the Acids in the Following