Question

Explain the role of phenolphthalein and methyl orange indicator in titration

Answer 1

this is because it changes color based on pH. Hence, doing a titration (specifically, and acid/base titration), you can visually observe the change in pH by looking at the color of the solution.

Answer 2

Answer : The role of phenolphthalein and methyl orange indicator in titration is to determine the equivalence point when the color change.

Explanation :

Indicator : It is a substance that changes the color in the response to a chemical change.

Indicators are either organic weak acids or weak bases with a characteristic of having different colors in the ionized and unionized forms.

The indicator phenolphthalein is a weak acid that ionized form is pink and unionized form is colorless.

The indicator methyl orange is a weak base that ionized form is red and unionized form is yellow.

During the titration, when a drop of indicator solution is added to the titration at starting, the endpoint has been reached when the color changes.