Anna has a solid sample and did use an aqueous solvent to dissolve it. She observed that some of her solid-sample was remained undissolved. She then filters her solution to separate the liquid from the undissolved solid. She disregards the solid so that it won’t interfere the reactions that may occur in the solution. Out of that solution, five replicates were obtained and she took the analytical procedure at the same time and in the same way. In Anna’s procedure, what was her source of error?
Anna has a solid sample and did use an aqueous solvent to dissolve it. She observed that some of her solid-sample was remained undissolved. She then filters her solution to separate the liquid from the undissolved solid. She disregards the solid so that it won’t interfere the reactions that may occur in the solution. Out of that solution, five replicates were obtained and she took the analytical procedure at the same time and in the same way. In Anna’s procedure, what was her source of error?
Select one:
a. None. She did it well.
b. Applying analytical procedure at the same time and in the same way.
c. Using an aqueous solvent to dissolve her solid-sample
d. Filtering her solution
e. Having five replicates instead of three
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