Write mechanism of the following reaction : C 2 H 5 OH → 443 K H 2 SO 4 CH 2 = CH 2 + H 2 O

Alcohols undergo dehydration (removal of a molecule of water) to form alkenes on treating with concentrated H 2 SO 4 . This is called elimination reaction. Mechanism: Step 1: Formation of protonated alcohol. Step 2: Formation of carbocation: It is the slowest step and hence, the rate determining step of the reaction. Step 3: Formation of ethene by elimination of a water molecule. The acid used in step 1 is released in step 3. To drive the equilibrium to the right, ethene is removed as it is formed.

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How is the following conversion brought about?

Benzyl alcohol to benzoic acid

Important Questions on Alcohols, Phenols and Ethers

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Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Chemical Properties of Alcohols

Which of the following compounds will most readily be dehydrated to give alkene under acidic condition?

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Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Chemical Properties of Alcohols

Which is the most suitable reagent for the following transformation?
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Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Chemical Properties of Alcohols

The most suitable reagent for the conversion of

R - {CH}_{2} - OH \to R - CHO

is :

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Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Chemical Properties of Alcohols

Oxidation of 1^o alcohols to aldehydes is very successful for the alcohols like

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Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Chemical Properties of Alcohols

Out of t-butyl alcohol and n-butanol, which one will undergo acid catalyzed dehydration faster and why ?

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Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Chemical Properties of Alcohols

Which of the following compound will give positive iodoform test?

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Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Chemical Properties of Alcohols

Consider the following reaction,

C_{2} H_{5} O H + H_{2} S O_{4} \to P r o d u c t

Among the following, which one cannot be formed as a product under any conditions?

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Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Chemical Properties of Alcohols

An organic compound neither reacts with neutral ferric chloride solution nor with Fehling solution. It however, reacts with Grignard reagent and given positive iodoform test. The compound is:

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Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Chemical Properties of Alcohols

The compound