Analysis of vinegar by titration Technique

Analysis of vinegar by titration Method

In order to measure how much acid or base is present in a solution we often use a method called titration. If a solution is acidic, titration consists of adding base to it until all the acid is neutralized. To do this, we need two things: (1) a means of measuring how much base is added and (2) a means of telling just when the acid is completely neutralized.


How much base is added requires the knowledge of the number of equivalents of the base. The number of equivalents is the product of the volume of the base added and the normality of the base.

Equivalents=
V * N

The titration is completed when the number of equivalents of acid equals the number of equivalents of base.

Equivalents (acid)
= Equivalents (base ). or

V acid * N acid =
V base * N base , This is called the titration equation.

We use an indicator to tell us when the titration is completed. Indicators are organic compounds that change color when there is a change in the pH of the solution. The end point of the titration is when a sudden change in the pH of the solution occurs. Therefore, we can tell the completion of the titration when we observe a change in the color of our
solution to which a few drops of indicator have been added.