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A key clever aspect of the Job plot method is keeping the total number of moles of both reagents constant- increasing one while decreasing the other. Another approach to determining stoichiometry more closely resembles a titration. In this method, you keep constant the moles of metal (or cation) and add increasing amounts of ligand (or anion) while monitoring abso rbance of the product (MLn) being formed. The concentration of the ligand solution you are adding is often quite concentrated so the total volume of your sample remains relatively constant. Draw a plot of [MLn] (concentration of product) vs. moles addedduring such a titration.
Provide a short explanation of how you would determine the stoichiometry.
Initially, with increase in no.of moles of ligand, the concentration of product [MLn] increases. After some time when all the metal ions are consumed in making complex further addition of ligand will not affect the absorbance and concentration of product becomes constant. This is called equivalence point. Using the value of no. of moles of ligand at equivalence point and metal ion concentration stoichiometry can be determined.
A key clever aspect of the Job plot method is keeping the total number of moles...
Titration: Acids and Bases 2. How can you determine which acid is diprotic? 3. using the answers to questions one and two, which acid is diprotic? 4. Which base has more hydroxide ions per molecule? Acid Volume Base Base Initial Volume (mL) Base Final Volume (mL) Volume of Base Used (mL) Acid: Base Ratio Acid 1 20 mL Base 1 50 mL 34.5 15.5 4:3 Acid 2 20 mL Base 1 Acid 1 20 mL Base 2 Acid 2 20...
It's a weak acid strong base titration Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...