Reaction Conditions 1 1. In a 50-mL round-bottomed flask, with a spin bar, add 10mL of H20 solution which contains 1.0 2. mmol of 2-acetylpyridine. Stir the mixture vigorously. 3. Place 1.0 mmol of 4-nitrobenzaldehyde in a separate vial and dissolve using a minimum amount of warm MeOH. While still warm, add the solution of 4-nitrobenzaldehyde to the stirring mixture in the round-bottomed flask. 4. To this mixture add 0.25 mmol of Na,CO, dissolved in 5 mL of H,O. 5. After 1 hr of vigorous stirring, collect the solid product using vacuum filtration and wash with H,0 (3 x 10mL) and a minimal amount of cold MeOH. 6. Allow the product to dry on the vacuum, determine the yield, melting point and record the IR 7. spectra of your product. ceaction Conditions 2 . In a 50-mL round-bottomed flask, with a spin bar, add 10mL of H2O solution which contains 1.0 mmol of 2-acetylpyridine. Stir the mixture vigorously. 2. Place 1.0 mmol of 4-nitrobenzaldehyde in a separate vial and dissolve using a minimum amount of warm MeOH. While still warm, add the solution of 4-nitrobenzaldehyde to the stirring mixture in the round-bottomed flask. 3. To this mixture add 0.25 mmol of Na2CO3 dissolved in 5 mL of H2O. 4. Attach a water-cooled reflux condenser and heat the reaction to reflux using an oil bath or a heating mantle. 5. After 1 hr of vigorous stirring at reflux, cool the reaction using an ice-water bath, collect the solid product using vacuum filtration. Wash the solid with H20 (3 x 10mL) and a minimal amount of cold MeOH. 6. Allow the product to dry on the vacuum, determine the yield, melting point and record the IR spectra of your product. Cleanup: All of the filtrate waste should be placed into the organic waste container. Vhat was the main difference between the experimental reaction conditions 1 and 2? Select one: a. water b. warm methanol C. stirring d. sodium carbonate e. time of reaction f. refluxing
Catalysis and Enzymatic Reactions
Catalysis is the kind of chemical reaction in which the rate (speed) of a reaction is enhanced by the catalyst which is not consumed during the process of reaction and afterward it is removed when the catalyst is not used to make up the impurity in the product. The enzymatic reaction is the reaction that is catalyzed via enzymes.
Lock And Key Model
The lock-and-key model is used to describe the catalytic enzyme activity, based on the interaction between enzyme and substrate. This model considers the lock as an enzyme and the key as a substrate to explain this model. The concept of how a unique distinct key only can have the access to open a particular lock resembles how the specific substrate can only fit into the particular active site of the enzyme. This is significant in understanding the intermolecular interaction between proteins and plays a vital role in drug interaction.
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