What is the role of a pH indicator in a titration for qualitative analysis?
Practice Questions
1 question
Q1
What is the role of a pH indicator in a titration for qualitative analysis?
To measure the temperature of the solution
To indicate the endpoint of the titration
To separate ions in the solution
To enhance the color of the solution
A pH indicator changes color at a specific pH level, signaling the endpoint of the titration, which helps in identifying the presence of certain ions.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the role of a pH indicator in a titration for qualitative analysis?
Solution: A pH indicator changes color at a specific pH level, signaling the endpoint of the titration, which helps in identifying the presence of certain ions.
Steps: 8
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.
