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Unit 5: Chemical Kinetics and Equilibrium
Unit 5: Chemical Kinetics and Equilibrium

... constant with time (the Forward Reaction Rate = Reverse Reaction Rate). - the equilibrium state is dynamic (not static). Chemical species are continuously converting from reactants to products and vice versa. It appears that the reaction has stopped only because the rate of consumption = rate of pro ...
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... E/Z System: For each carbon of the double bond, the groups are Assign a priority (high or low) according to a system of rules. Thus, the high priority groups can be on the same side or on opposite Sides of the double bond. If the high priority groups are on opposite sides then the double bond is des ...
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... • Step 3: Make a new bond between a nucleophile and an electrophile. The ketone reacts with a second mole of Grignard reagent to give a second tetrahedral carbonyl addition intermediate. ...
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... and methanol are presented. Since sulfonic acids share common characteristics of extremely high acidity and low nucleophilicity, understanding of this model system is anticipated to be applicable to formation of sulfonate esters more generally. Two mechanistic pathways for sulfonate ester formation ...
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... b. Ring-opening reactions of epoxides: Epoxides are highly strained and easily undergo ring-opening reactions under both acidic and basic conditions. Acidic conditions: ring-opening reactions proceed rapidly at low temperatures (usually at room temp or below); elongated C-O bonds of the protonated, ...
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... Gases play a very important role in our daily existence. Since we are surrounded by an ocean of gas called the atmosphere, many of the properties of gases are already familiar to us. We know that we can squeeze a balloon into a smaller shape and that perfume released into the corner of a room can, i ...
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... Course Objective: To impart advanced knowledge of aromaticity, stereochemistry of organic compounds, pericyclic and photochemical reactions. Stereochemistry: Conformational analysis of Cycloalkanes and Decalins, Effect of conformation on reactivity, Conformation of sugars, Steric-strain due to unavo ...
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... Optical activity in absence of chiral carbon (biphenyls, allenes and spirans), chirality due to helical shape. Stereochemistry of organo nitrogen-, sulfur- and phosphorus- compounds. Optical rotatory dispersion, circular dichroism, Cotton effect, axial haloketone rule, octant rule. Aromaticity in be ...
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Problem 28. TUNNELING IN CHEMISTRY
Problem 28. TUNNELING IN CHEMISTRY

... Many chemical phenomena can be explained by physical theories. The main theory for chemistry is quantum mechanics, which gives the solid foundation for the observed chemical periodicity. One of the cornerstones of quantum mechanics is the superposition principle that says: “If a quantum system can b ...
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George S. Hammond

George Simms Hammond (May 22, 1921 – October 5, 2005) was a chemist at Iowa State University and the California Institute of Technology. Born and raised in Auburn, Maine, he attended nearby Bates College in Lewiston, Maine where he graduated Magna Cum Laude with a B.S. in Chemistry in 1943. He completed his doctorate at Harvard in 1947, under the mentorship ofPaul D. Bartlett, and a postdoc at UCLA with Saul Winstein in 1948.Among his awards were the Norris Award in 1968, the Priestley Medal in 1976, the National Medal of Science in 1994, and the Othmer Gold Medal in 2003.Hammond was a leader in the field of photochemistry and was widely credited with creating the discipline of organic photochemistry. Hammond's postulate, also known as the Hammond-Leffler postulate, was based on his 1955 publication.
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