What is the role of a pH indicator in a titration for qualitative analysis?

What is the role of a pH indicator in a titration for qualitative analysis?

Step 1: Understand what a titration is. It is a method used to determine the concentration of a substance in a solution.
Step 2: Know that a pH indicator is a special chemical that changes color depending on the acidity or basicity of a solution.
Step 3: During a titration, you slowly add a solution (titrant) to another solution (analyte) until a reaction occurs.
Step 4: The pH indicator is added to the analyte solution before starting the titration.
Step 5: As you add the titrant, the pH of the solution changes.
Step 6: When the pH reaches a certain level, the pH indicator changes color.
Step 7: This color change signals that you have reached the endpoint of the titration.
Step 8: The endpoint helps you identify the presence of certain ions in the solution based on the color change.

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