During an Acid-Base Titration a Rapid Change in Ph?

When an acid is titrated with a base, there is typically a sudden change in the pH of the solution at the equivalence point

equivalence point
The equivalence point, or stoichiometric point, of a chemical reaction is the point at which chemically equivalent quantities of reactants have been mixed. ... The endpoint (related to, but not the same as the equivalence point) refers to the point at which the indicator changes color in a colorimetric titration.
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(where the amount of titrant added equals the amount of acid originally present).

What is the change in pH during the titration?

A titration curve reflects the strength of the corresponding acid and base, showing the pH change during titration. The titration curve demonstrating the pH change during the titration of the strong base with a weak acid shows that at the beginning, the pH changes very slowly and gradually.

When titrating an acid with a base Why does the pH increase dramatically after the equivalence point has been reached?

As we add strong base to a strong acid, the pH increases slowly until we near the equivalence point, where the pH increases dramatically with a small increase in the volume of base added. This is due to the logarithmic nature of the pH system (pH = -log [H+]). At the equivalence point, the pH is 7.0, as expected.

David Miller

David Miller

Executive Financial & Market Analyst

David Miller brings 15 years of experience in global economics, personal finance strategy, and market dynamics. He specializes in turning complex economic trends into actionable insights for everyday readers.