"Aldehyde" Essays and Research Papers

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Aldehyde

ALDEHYDES AND KETONES Abstract Aldehydes and Ketones have certain characteristics in common. However, both couldn’t exist in the same compound. Some test for the presence of aldehyde was made for this experiment. These tests includes Tollen’s test, Benedict’s Test, 2-4-dinitrophenylhydrazine and Schiff’s test. All the tests conduted yielded same results, that is, formalin and benzaldehyde are aldehyde-containing compounds while acetone is a ketone. On the other hand, effect of acid concentration...

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The Aldehyde Enigma

Esmeralda Curiel Organic Chemistry November 11, 2014 Experiment 62 – The Aldehyde Enigma INTRODUCTION In the Cannizaro reaction an aldehyde is simultaneously reduced into its primary alcohol form and also oxidized into it's carboxylic acid form. The purpose of this experiment is to isolate, purify and identify compounds 1 and 2 which contain 4-chlorobenzaldehyde, methanol, and aqueous potassium hydroxide. Compounds 1 and 2 are purified by crystallization. . The purified product will be characterized...

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Aldehydes and Ketones

Aldehyde and Ketone 1. ALDEHYDE  Definition: An aldehyde is an organic compound containing a formyl group. This functional group, with the structure R-CHO, consists of a carbonyl center (a carbon double bonded to oxygen) bonded to hydrogen and an R group, which is any generic alkyl or side chain. The group without R is called the aldehyde group or formyl group. Aldehydes differ from ketones in that the carbonyl is placed at the end of a carbon skeleton rather than between two carbon atoms...

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Reaction of Aldehydes and Ketones with Naoh

D. REACTIONS OF ALDEHYDES AND KETONES WITH SODIUM HYDROXIDE (By: Mary Deo Luigi J. Mabunay 1N-3) Objective: To determine the reactions of Aldehydes and Ketones when combined with Sodium Hydroxide. Process: * Obtain 5 clean and dry test tubes * Put 2mL of 40% NaOH solution to test tubes 1, 2 and 3 and on test tubes 4 and 5, put 10% NaOH solution * Add 10 drops of the following solution: * Tube 1: formaldehyde * Tube 2: benzaldehyde * Tube 3: acetaldehyde ...

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Test for Alcohols, Aldehydes and Ketones

acetophenone. Based on these data, it is possible to find alcohol by oxidation and aldehyde by observing precipitation Introduction This experiments is to find if one substance has alcohols, aldehydes or ketones. If one reactant is alcohol, the color of the reactant will be turned into green when 6 drops of potassium dichromate and 1 drop of concentrated sulfuric acid were added. Also, if one reactant is aldehyde or ketone, precipitation will be observed when 6 drops of 2,4-dinitrophenylhydrazine...

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Reactions of Carbonyls-Aldehyde/Ketone Analysis:

Reactions of Carbonyls-Aldehyde/Ketone Analysis: Introduction: The carbonyl group is a rich source of many important reactions in organic chemistry, with two fundamental properties that are primarily responsible for its diverse chemistry. The first is the polarization of the. Carbon-oxygen pi bond, owing to the relatively high electro negativity. The second property of a carbonyl function is to increase the acidity of the alpha-hydrogen atoms, which are the hydrogen’s...

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Aldo Condensation

formed. This product formed involves two aldehydes or ketones in the presence of dilute base, yields a molecule having both aldehyde and alcohol. The aldol products are β-hydroxyaldehydes or β- hydroxyketones. Condensation reaction is the transformation that result from combination of large molecules to produce another larger molecule. In an aldol condensation, β-hydroxyaldehyde or a β-hydroxyketone is produced in but upon heating the α,β-unsaturated aldehyde or ketone with water is produced. In double...

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CARBOXYLIC ACID

General method of preparation: 1. From primary alcohols Primary alcohols and aldehydes are readily oxidized to corresponding carboxylic acids by oxidizing agents such as potassium dichromate in an acidic medium. R–CH2–OH + [O] R–CHO+ [O] ­­­­­­­­­­ RCOOH CH3–CH2–OH + [O] CH3–CHO + [O] CH3COOH 2. From aldehydes: Aldehydes are easily oxidized to corresponding carboxylic acids even by mild oxidizing agents...

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Functional Group Analysis

August 24, 2012; Date Submitted: September 19, 2012 Results and Discussion Aldehydes and ketones both contain the carbonyl group – a group in which a carbon atom has a double bond to oxygen. The carbonyl group in aldehydes is bonded to at least one hydrogen atom, and in ketones it is bonded to two carbon atoms. The general formula for an aldehyde is And the general formula for a ketone is Aldehydes and ketones have a trigonal planar arrangement of groups around the carbonyl carbon...

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Oxygen Bearing Compounds

test, Iodoform Test, and Lucas Test. This was conducted to classify the samples from being a primary alcohol, a secondary alcohol, a tertiary alcohol, aldehyde, or a ketone. Introduction In analyzing the oxygen bearing organic compounds, there are several tests that may be performed to distinguish among the different classes of alcohols, aldehydes, and ketones. All these tests exploit differences in the type and degree of reactivity of each of the functional groups. Several different oxidizing...

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