SISAI s performed three tim dents for the mass of 361g, and 0.2341g. T mass of silver is 0.52

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter7: Statistical Data Treatment And Evaluation
Section: Chapter Questions
Problem 7.12QAP
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A gravimetric analysis of silver in a sample X
was performed three times. The result of the
students for the mass of silver were 0.2351g,
0.2361g, and 0.2341g. The "true value" for
the mass of silver is 0.5211g. Check all that
applies!
The percent error from the true value is 55%
O The precision of the gravimetric analysis was
very bad, i.e. the results are unacceptable.
The mean value is 0.24g
The RSD is 0.4g
The percent error from the true value is
54.88%
The mean value is 0.2351g
The RSD is 0.43%
The precision of the gravimetric analysis was
good.
Transcribed Image Text:A gravimetric analysis of silver in a sample X was performed three times. The result of the students for the mass of silver were 0.2351g, 0.2361g, and 0.2341g. The "true value" for the mass of silver is 0.5211g. Check all that applies! The percent error from the true value is 55% O The precision of the gravimetric analysis was very bad, i.e. the results are unacceptable. The mean value is 0.24g The RSD is 0.4g The percent error from the true value is 54.88% The mean value is 0.2351g The RSD is 0.43% The precision of the gravimetric analysis was good.
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