4) How would your calculated value of Ksn be affected by errors introduced from the following sources? Be specific in your answer. State whether Ksp Would be too large, too small, or not affected, and explain why that error would have that effect on Kep- The precipitate of Ca(IO3)2, when obtained originally, is not washed with distilled water. b The Na2S2O3 was not standardized, so its nominal molarity was used instead of a standardized molarity. Note that Na2S203 solutions can air oxidize over time. Although the KIO3 used to standardize the Na2S203 is labeled as 0.0100 M, its actual concentration is somewhat higher than 0.0100 M. Extraneous water is introduced from wet filter paper or wet funnels, or by washing the precipitate during the final filtration of Ca(IO3)2.
4) How would your calculated value of Ksn be affected by errors introduced from the following sources? Be specific in your answer. State whether Ksp Would be too large, too small, or not affected, and explain why that error would have that effect on Kep- The precipitate of Ca(IO3)2, when obtained originally, is not washed with distilled water. b The Na2S2O3 was not standardized, so its nominal molarity was used instead of a standardized molarity. Note that Na2S203 solutions can air oxidize over time. Although the KIO3 used to standardize the Na2S203 is labeled as 0.0100 M, its actual concentration is somewhat higher than 0.0100 M. Extraneous water is introduced from wet filter paper or wet funnels, or by washing the precipitate during the final filtration of Ca(IO3)2.
Chapter10: Potentiometry And Redox Titrations
Section: Chapter Questions
Problem 8P
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Transcribed Image Text:4) How would your calculated value of Ksn be affected by errors introduced from the following
sources? Be specific in your answer. State whether Ksp Would be too large, too small, or not
affected, and explain why that error would have that effect on Kep-
The precipitate of Ca(IO3)2, when obtained originally, is not washed with distilled water.
b The Na2S2O3 was not standardized, so its nominal molarity was used instead of a
standardized molarity. Note that Na2S203 solutions can air oxidize over time.
Although the KIO3 used to standardize the Na2S203 is labeled as 0.0100 M, its actual
concentration is somewhat higher than 0.0100 M.
Extraneous water is introduced from wet filter paper or wet funnels, or by washing
the precipitate during the final filtration of Ca(IO3)2.
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