Multiple Choice
Which of the following statements correctly describes the difference between competitive inhibition and allosteric inhibition in the context of enzyme activity?
3. Acids and Bases
Acids and Bases
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In the context of acid-base titrations, when should a positive control be used?
A
To neutralize the solution after the titration is complete
B
To ensure the titration setup is functioning correctly by using a known acid or base
C
To determine the endpoint of the titration by using an unknown solution
D
To calibrate the pH meter before starting the titration
Verified step by step guidance1
Understand the purpose of a positive control in an experimental setup. A positive control is used to confirm that the experimental setup is functioning correctly by using a known substance with a predictable outcome.
In the context of acid-base titrations, a positive control can be a known acid or base that is used to verify the accuracy and reliability of the titration process.
Consider the role of a positive control in ensuring the titration setup is functioning correctly. It helps to validate the procedure and equipment, such as the burette and pH meter, by providing a reference point.
Recognize that a positive control is not used to neutralize the solution after the titration is complete. Its primary function is to ensure the setup is working as expected before proceeding with the actual titration.
A positive control is also not used to determine the endpoint of the titration with an unknown solution. Instead, it is used to calibrate and verify the setup using a known substance, ensuring accurate results during the titration process.
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