What is a universal indicator?
Q: What is a universal indicator?
A: A universal indicator is a type of test used to measure the pH value of a liquid using a solution with several chemical indicators.
Q: How does a universal indicator work?
A: A universal indicator works by changing color based on the pH value of the liquid being tested.
Q: What can a universal indicator indicate?
A: A universal indicator can indicate the pH value of a liquid, which can range from acidic to basic.
Q: What are the advantages of using a universal indicator?
A: The advantage of using a universal indicator is that it can show a wide range of pH values based on the color changes.
Q: What are the disadvantages of using a universal indicator?
A: The disadvantage of using a universal indicator is that it cannot be used for titrations, which require a precise and well-defined color change.
Q: Can a universal indicator be used to determine the pH value of a solution in a titration?
A: No, a universal indicator cannot be used to determine the pH value of a solution in a titration because it cannot produce a well-defined change in color.
Q: Why is a well-defined change in color important for titrations?
A: A well-defined change in color is important for titrations because it helps determine the endpoint of the reaction, where the reaction has completely reacted and the concentration of one of the reactants can be calculated.
