Question

When an acid is added to a basic solution, what happens to the pH of the solution?

Answer 1

Consider the graph of `pH` versus volume of solvent added in the appropriate acid base titration...........

Explanation:

The graph depicts the titration of a strong base with a strong acid...

Well before equivalence, addition of the acid titrant only marginally affects solution `pH`; we are still in the basic regime. Towards equivalence, the `pH` changes dramatically, as the last excess of `HO^-` is neutralized. Beyond equivalence, addition of further titrant only marginally decreases solution `pH`.