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A sensitive method for the flow injection analysis of Cult is based on its ability to catalyze the oxidation of di-2-pyridyl ketone hydrazone (DPKH). The product of the reaction is fluorescent (meaning that it gives off light under short wavelength illumination) and is used to generate a signal when using a fluorimeter as a detector. The yield of the reaction is at a maximum when the solution is made basic with NaOH. The fluorescence, however, is greatest in the presence of HCl. Sketch a FIA instrument for this analysis.
Calculate the pH of a buffer solution obtained by dissolving 20.0 g of KH2PO4(s) and 30.0 g of Na2HPO4(s) in water and then diluting to 1.00 L.
Nitration is the process of introducing a nitro functional group to a benzene ring. The reaction occurs through a mechanism known as electrophilic aromatic substitution.
Problem- Your chemiluminescence reaction will actually occur very slowly in air. What component of air will bring about this reaction and what is its approximate concentration in air. If you had a stoppered flask with basic luminol and then opened..
A solution that is a mixture of 0.4 mol C2H4Br2 and 0.6 mol C3H6Br2 has a vapor pressure of 145 mmHg at a particular temperature. Determine the vapor pressure of pure C3H6Br2 at this temperature,
at room temperature 20 degrees celsiusmilk turns sour in approximately 63 hours. in a refrigerator at 3 degrees celsius
What volumes of 0.01 M HCl are required to titrate 250 mL of 0.01 M Na2CO3 to the first equivalence point
What is the structure for hexadecanol?, What would explain why it is a solid, rather than a liquid?, How are ethanol, 1-octanol, propane-1,2,3-triol, and hexadecanol similar to their corresponding hydrocarbons (ethane, octane, propane, & hexadecan..
Compare and contrast the best and worst visual presentations you have experienced as an audience member. Then, create a list of three "must do" and three "don't do" from your experiences.
the log henrys law constant units of l-atmmole and measured at 25 degrees celsius for trichloroethylene is 1.03 for
A 1.000-mL aliquot of a solution containing Cu2 and Ni2 is treated with 25.00 mL of a 0.04068 M EDTA solution. The solution is then back titrated with 0.02053 M Zn2 solution at a pH of 5
In a particular photoelectron spectrum using 21.21 eV photons, electrons were ejected with kinetic energies of 11.01 eV, 8.23 eV, and 5.22 eV. Sketch the molecular orbital energy level diagram for the species,
Problem- Absorbance measurements in the range of A = 0.3-2 are considered the most accurate. Why would absorbance measurements of 0.05 and 2.5 be considered inaccurate. Select all that apply.
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