alcohols phenols and ethers class 12 ppt

95% ethanol is called rectified spirit. A mixture of 20% ethanol and 80% gasoline is known as power alcohol. >>Class 12 · >>Chemistry · >>Alcohols, Phenols and Ethers · >>Chemical Reactions of Alcohols and Phenols · >>Reaction of bromine water with phenol gi. Back To Home Page. Subject Name: Chemistry (XII) 3, Electrochemistry, PPTElectrochemistry 11, Alcohols, Phenols and Ethers, E-Book (Part II). FOREXINDO TRADING PALING SIMPLE INTEREST

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Write all possible structures then keep the most substituted ones! Slide 17 - Hydroxybenzene a. SlidesFinder is a very popular and powerful online presentation sharing website that allows you to upload your PowerPoint presentations online for free. SlidesFinder is a great resource that gives you access to numerous presentations on varied subjects. You can favorite the presentations, download presentations, and even embed them in your blog.

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We only store their respective email addresses for becoming registered member of Slidesfinder. Only unsaturated monohydroxyl alcohols are characterized by geometrical isomery. Optical isomery is characteristic for alcohols which have asymmetric carbon atom in their structure. The methods of extraction of monohydroxyl alcohols Alcohols can be obtained from many other classes of compounds. Preparations from alkyl halides and from hydrocarbons will be discussed in this section.

Hydrogenation of alkenes. This reaction runs by Markovnikov rule. Reduction of carbonyl compounds aldehydes, ketones, carboxylic acids, complex ethers : 1. Alcohols have weak acidic and weak alkaline properties. Dehydration of alcohols. There are 2 types of dehydration: a Dehydration between 2 molecules: b Dehydration in the molecule intramolecular dehydration : 4. Because aldehydes themselves are readily oxidized by the same oxidizing agents that oxidize alcohols, aldehydes are further converted to carboxylic acids.

Unlike aldehydes, ketones are resistant to further oxidation. To determine any alcohol which contain fragment in the mixture of compounds it is needed to use iodoform test. As the result yellow precipitate forms. Di-, tri- and polyhydroxyl alcohols Dihydroxyl alcohols contain two groups —OH in the molecule. They are called diols.

There are several types of diols. Trihydroxyl alcohols contain three groups —OH in the molecule. They are called triols. The representative is glycerin:. To extract glycerin it is necessary to use next reaction: b Chemical properties of di-, tri- and polihydroxyl alcohols Reaction with alkaline metals 2. Reaction with Cu OH 2 3. Formation of simple and complex ethers reaction with monohydroxy alcohols and organic acids : 6.

Oxidation by KMnO4 7. Dehydration 8. Polycondensation 9. Diols react intramolecularly to form cyclic ethers when a five-membered or sixmembered ring can result. The preparation of thiols involves nucleophilic substitution of the SN2 type on alkylhalides and uses the reagent thiourea as the source of sulfur. Both steps can be carried out sequentially without isolating the isothiouronium salt. They can react with alkenes peroxides are catalysts : 3. Reaction with organic acids: 4. When both alkyl groups are the same, the prefix di- precedes the name of the alkyl group.

Physical properties of ethers It is instructive to compare the physical properties of ethers with alkanes and alcohols. With respect to boiling point, ethers resemble alkanes more than alcohols. With respect to solubility in water the reverse is true; ethers resemble alcohols more than alkanes.

In general, the boiling points of alcohols are unusually high because of hydrogen bonding. Attractive forces in the liquid phases of ethers and alkanes, which lack - OH groups and cannot form intermolecular hydrogen bonds, are much weaker, and their boiling points lower. These attractive forces cause ethers to dissolve in water to approximately the same extent as comparably constituted alcohols. Alkanes cannot engage in hydrogen bonding to water.

Dehydration of alcohols dehydration between 2 molecules : Chemical properties of ethers Reaction with concentrated mineral acids formation of oxonium salts : A second dangerous property of ethers is the ease with which they undergo oxidation in air to form explosive peroxides. Air oxidation of diethyl ether proceeds according to the equation The reaction follows a free-radical mechanism and gives a hydroperoxide, a compound of the type ROOH.

Hydroperoxides tend to be unstable and shock-sensitive. On standing, they form related peroxidic derivatives, which are also prone to violent decomposition.

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PLUS TWO CHEMISTRY - Chapter 11 Alcohols,Phenol \u0026 Ethers - Part 2 - Malayalam - SCERT/NCERT ( XII) alcohols phenols and ethers class 12 ppt

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Alcohol, Phenol and Ether - L-7 - Class 12 Chemistry - CBSE-2023 - Headstart Term-1 - Rahul Dudi

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