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Multiple Choice
What is the main purpose of creating serial dilutions of a stock solution?
A
To increase the concentration of the stock solution
B
To change the chemical identity of the solute
C
To purify the stock solution
D
To achieve a range of concentrations for experimental analysis
Verified step by step guidance
1
Understand the concept of a serial dilution: A serial dilution involves creating a series of solutions where each solution is a diluted version of the previous one, typically by a constant factor.
Recognize the purpose of serial dilutions: The main goal is to achieve a range of concentrations from a single stock solution, which is useful for experiments that require different concentrations to analyze trends or effects.
Identify the incorrect options: Increasing the concentration of the stock solution is not possible through dilution, and changing the chemical identity of the solute or purifying the stock solution are not purposes of serial dilutions.
Consider practical applications: Serial dilutions are often used in experiments such as enzyme kinetics, microbial growth studies, or any scenario where a gradient of concentrations is needed to observe varying effects.
Conclude with the correct purpose: The primary reason for creating serial dilutions is to achieve a range of concentrations for experimental analysis, allowing for systematic study of how different concentrations affect the outcome of an experiment.