Analytical chemistry

setting, and then saw the application of the techniques at the research and development site of the pharmaceutical company, Eli Lilly. Of the three echniques we have studied, I find interpreting NMR spectra particularly interesting, as I have an analytical mind and enjoy the logical challenge. I find the connections between chemical, biological and ethical factors fascinating, links which were particularly…

WHAT IS NMR SPECTROCOPY? By definition, NMR spectroscopy is a research technique that makes use of the fact that certain atomic nuclei exhibit magnetic property to determine their chemical and physical properties for various uses that we’ll discuss later. History of NMR Spectroscopy Year Individual Discovery 1921 Stern and Gerlach Basis of quantum theory is confirmed by carrying out atomic and molecular beam experiments 1925 Ulhenbeck & Goudsmith Discovered the concept of spinning…

Sulfur: Research Paper by Brian Zhang 805 If you ever happened to unnerve a grumpy skunk, then you would have understood the severe atrocity of its scent firsthand. What you probably didn't realize, however, concerns the fact that sulfur holds much blame for the nasty occurrence. In fact, this mother of repulsive odors earns its spot on the periodic table as one of the world's 118 chemical elements, or substances that contain only one type of atom. Much like any other non-metal, it does…

Cyclic Voltammetry of Ferricyanide Analytical Lab 1: 2410L Benjamin A. Battiste Group 2 10/14/15 Introduction: The purpose of this experiment is to use cyclic voltammetry to see how ferricyanide can be reduced to ferrocyanide. Using cyclic voltammetry a calibration curve will be created to determine the concention(mM) of an unknown solution of ferricyanide. In cyclic voltammetry, the potential of a substance is scanned starting from a certain voltage, going to another voltage, and then…

Identification of an Unknown Compound to Determine Proper Waste Procedures Department of Chemistry, Michigan State University, East Lansing, MI 48823 October 13, 2015 For completion of CEM 161 Section 009, under supervision of Abstract: In order to determine the identity of the compound we performed many experiments with a solution of the compound. These experiments included testing for all of the following ions; ammonium, halide, sulfate, carbonate, nitrate, and acetate…

Sodium diethyldithiocarbamate, limiting equivalent conductance (Λ0), ion association, activation energy and thermodynamic functions. Introduction: The measurement of electrical conductivities of dilute solutions of salts or complexes is considered to be one of the important methods for studying the ion-pair or multiple- ion association not only in aqueous solutions but also in non-aqueous or mixed ones 1-4. Also, conductivity measurements were used to evaluate the hydration free energy of some…

1.0. Synopsis The objective of this experiment is to use the gravimetric method to determine the concentration of sulfate. Gravimetric analysis is a method used to determine the mass or concentration of a substance by measuring a change in mass. To determine the concentration of the sulfate, the precipitation of Barium sulfate is done first by adding the sulfate solution with hydrochloric acid, then heating while stirring it. Next is the washing and filtration of the Barium Sulfate precipitate,…

INTRODUCTION CLASS : B.S-VIII CHEMISTRY SUBJECT: ENVIRONMENTAL ANALYTICAL CHEMISTRY TOPIC: SOFT DRINKS & ITS HARMFUL EFFECTS SUBMITTED TO: DR. SANA MUSTAFA MADE BY: HAFIZ MANSOOR HUSSAIN 11/05/2014 HAFIZ MANSOOR HUSSAIN 2 3. WHAT ARE SOFT DRINKS ? ? ? ? ? ? ? Soft drink is also known as club soda, soda water, sparkling water, carbonated water & fizzy water. It is water into which carbon di oxide gas under pressure has been dissolve, a process that cause the water to become effervescent. and…

Microwave (MW) assisted Esterification of Benzoic Acid (BA) offers the advantage of transformation of energy and heating throughout the volume efficiently in a shorter period and eliminates the use of excess solvent, during the course of reaction. The present study aims to assess the conversion and selectivity for the production of methyl benzoate compounds by esterification of benzoic acid using microwave irradiation. Effects of operating parameters such as reaction time, feed composition,…

the condensation of primary amines and carbonyl compounds.It was first time presented by the Hugo schiff (Cimerman et al, 2000). Schiff bases are one of the most important class of organic drugs widely used in variety of different fields such as analytical, biological, and inorganic chemistry.The schiff bases heve been designed to synthesize more and more novel lead molecules possessing least toxicity with highest efficacy.Schiff bases have importance since the last decade that it pulled the…