General composition of a chromatography instrument

Question

Problem 1: What is the dominant species (H₂A, HA^-, A^2-) of a diprotic acid with pK_a1 = 3.5 and pK_a2 = 6.5 at a pH of 4.8?

Problem 2: Draw a Jablonski diagram. Describe the difference between the processes leading to fluorescence and phosphorescence.

Problem 3: Why is Raman spectroscopy using a visible light-range laser, whereas the energy of the excited vibrations lies in the infrared energy region?

Problem 4: X-ray absorption spectroscopy measures the absorption of X-rays by core electrons. What happens to excited core electrons? Where will you find the absorption edge of Mn 1s electrons, compared to that of Ni 1s electrons?

Problem 5: Describe the general composition of a chromatography instrument. Give examples for each component for an instrument that allows analyte separation by vapor pressure.

Problem 6: What is the separation principle in size-exclusion chromatography? In which order are analytes being eluted?

Problem 7: What is the purpose of isoelectric focusing in electrophoresis?

Problem 8: You measure a cell potential of -45mV for a WE of Ag/Ag⁺ in a silver ion solution of unknown concentration against a RE of Ag/Ag+ with a silver ion concentration of 0.5M. Determine the unknown Ag⁺ concentration.

Problem 9: Identify the Miller indices for the plane drawn into the cubic structure below:

Problem 10: Given a unit cell parameter a = 4.0Å and an X-ray energy of 3 keV, calculate the diffraction angle θ for the (1 0 0) plane.

Problem 11: What kind of light source is used in dynamic light scattering? Which phenomenon leads to a time-dependence in the measurement?

Problem 12: Describe the difference between back scattered electrons and secondary electrons. Focus on the mechanism of signal formation and the difference in information that these two signals provide.

Problem 13: You need to determine the relative amount of proline in a mixture of amino acids. Which technique do you choose and why?

Are you in the quest for the most appropriate Chromatography Assignment Help service in the USA? Then, don't worry; you are at the most correct place. The professionals of Tutorsglobe are just a click away from your academic success.

Tags: Chromatography Assignment Help, Chromatography Homework Help, Chromatography Coursework, Chromatography Solved Assignments, Jablonski Diagram Assignment Help, Jablonski Diagram Homework Help, Raman Spectroscopy Assignment Help, Raman Spectroscopy Homework Help, X-ray Absorption Spectroscopy Assignment Help, X-ray Absorption Spectroscopy Homework Help, Electrophoresis Assignment Help, Electrophoresis Homework Help, Miller Indices Assignment Help, Miller Indices Homework Help, Scattering Assignment Help, Scattering Homework Help