Problem

In a volumetric determination of an analyte A, the data obtained and their standard deviat...

In a volumetric determination of an analyte A, the data obtained and their standard deviations are as follows:

Initial buret reading

0.19 mL

0.02 mL

Final buret reading

9.26 mL

0.03 mL

Sample mass

45.0 mg

0.2 mg

From the data, find the coefficient of variation of the final result for the % A that is obtained by using the equation that follows and assuming there is no uncertainty in the equivalent mass.

% A = titrant volume × equivalent mass × 100%/sample mass

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Solutions For Problems in Chapter 6