Classify each titration curve as representing a strong acid titrated with a strong base, a strong base titrated with a strong acid, a weak acid titrated with a strong base, a weak base titrated with a strong acid, or a polyprotic acid titrated with a strong base.

Answers and explanations below (accompanied by pictures)

In Strong Acids and Strong Bases, initially the pH rises little by little. This is because the scale of the pH increase is logarithmic, which means that pH 1 has 10 times the acidity of pH 2. Then it rises sharply near the equivalent point. At this point, the remaining hydronium ions are low, and only a small amount of hydroxide ions is needed to raise the pH.

Explanation of weak acid and strong base titration curves:

The pH produced by titration of weak acids and strong bases rises faster at first, but less quickly when approaching the equivalent point.

Explanation of strong acid and weak base titration curves:

the equivalent point for strong acids and weak bases has a pH of less than 7.

Weak acids and weak bases do not produce sharp curves, even as if they are irregular. In the titration curve of weak acids and weak bases, there is an inflection point that is almost similar to the equivalent point.

Titration is a way to find out the concentration of a solution by reacting with another solution, which is usually in the form of acid or base. Titration is generally done by adding titrants of known concentration through the burette of a titrate of a certain volume whose concentration is sought. In acidic and basic reactions, titration is very useful for measuring pH at various points through chemical reactions. The result is a titration. A titration curve is a graph as a function of pH with the number of titrants added.

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Titration

Chemical reaction

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Class: High School

Subject: Chemistry

Keywords: Titration, Acid, Base

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