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- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/15%3A_Developing_a_Standard_Method/15.1%3A_Optimizing_the_Experimental_ProcedureDeveloping a standard method requires optimizing multiple aspects. Using the terminology of statisticians, we call the solution’s absorbance the system’s response. Hydrogen peroxide and sulfuric acid ...Developing a standard method requires optimizing multiple aspects. Using the terminology of statisticians, we call the solution’s absorbance the system’s response. Hydrogen peroxide and sulfuric acid are factors whose concentrations, or factor levels, determine the system’s response. To optimize the method we need to find the best combination of factor levels. Usually we seek a maximum response, but sometimes, such as minimizing an analysis’s percent error, we are looking for a minimum response.
- https://chem.libretexts.org/Courses/Lakehead_University/Analytical_I/5%3A_Standardizing_Analytical_Methods/5.5%3A_Blank_CorrectionsThus far in our discussion of strategies for standardizing analytical methods, we have assumed the use of a suitable reagent blank to correct for signals arising from sources other than the analyte. W...Thus far in our discussion of strategies for standardizing analytical methods, we have assumed the use of a suitable reagent blank to correct for signals arising from sources other than the analyte. We did not, however, ask an important question—“What constitutes an appropriate reagent blank?” Surprisingly, the answer is not immediately obvious.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/06%3A_Standardizing_Analytical_Methods/6.5%3A_Blank_CorrectionsThus far in our discussion of strategies for standardizing analytical methods, we have assumed the use of a suitable reagent blank to correct for signals arising from sources other than the analyte. W...Thus far in our discussion of strategies for standardizing analytical methods, we have assumed the use of a suitable reagent blank to correct for signals arising from sources other than the analyte. We did not, however, ask an important question—“What constitutes an appropriate reagent blank?” Surprisingly, the answer is not immediately obvious.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/12%3A_Electrochemical_Methods/12.2%3A_Potentiometric_MethodsIn potentiometry we measure the potential of an electrochemical cell under static conditions. Because no current—or only a negligible current—flows through the electrochemical cell, its composition re...In potentiometry we measure the potential of an electrochemical cell under static conditions. Because no current—or only a negligible current—flows through the electrochemical cell, its composition remains unchanged. For this reason, potentiometry is a useful quantitative method. The first quantitative potentiometric applications appeared soon after the formulation of the Nernst equation, which relates an electrochemical cell’s potential to the concentration of electroactive species in the cell.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/23%3A_Electrochemistry/23.05%3A_Standard_Hydrogen_ElectrodeThis page emphasizes the need for a universal standard in electrical potential measurements during chemical reactions, highlighting the standard hydrogen electrode (SHE) as the reference point with a ...This page emphasizes the need for a universal standard in electrical potential measurements during chemical reactions, highlighting the standard hydrogen electrode (SHE) as the reference point with a defined potential of zero. It explains the SHE's composition and conditions, and illustrates its application in calculating voltages for half-reactions, specifically in zinc and copper reactions, by using standard reduction potentials to determine cell electromotive force (emf).
