Multiple Choice
Determine the number of mmoles of sulfuric acid that would be found within a 120 g sample that is 79.9% sulfuric acid.
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1. Chemical Measurements
Volumetric Analysis
Multiple Choice
In volumetric analysis, what is the default chart speed typically set to when recording titration curves using an automatic titrator?
A
0.5 cm/min
B
2 cm/min
C
10 cm/min
D
5 cm/min
Verified step by step guidance1
Understand the context of the problem: In volumetric analysis, titration curves are recorded using an automatic titrator to monitor changes in pH or conductivity as a titrant is added. The chart speed refers to the rate at which the titration curve is plotted on the recording device.
Review the typical settings for chart speed in automatic titrators. Chart speed is usually chosen based on the titration's duration and the precision required for the analysis. Faster speeds are used for quick titrations, while slower speeds are preferred for more detailed analysis.
Consider the default chart speed setting. Manufacturers of automatic titrators often set a default speed that balances clarity and efficiency for most titrations. This default speed is commonly used unless the user adjusts it for specific needs.
Compare the given options (0.5 cm/min, 2 cm/min, 10 cm/min, 5 cm/min) to typical default chart speeds. The default speed is usually moderate, not too slow or too fast, to ensure the titration curve is clear and interpretable.
Conclude that the correct answer corresponds to the most commonly used default chart speed in automatic titrators, which is typically 2 cm/min or 5 cm/min depending on the manufacturer and the titration method.
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