2015年12月8日 · You can say like that firstly ethyl alcohol coverts to ethene and futher it reacts with sulphuric acid to give CHX3−CHX2−OSOX3H C H X 3 − C H X 2 − O S O X 3 H. It futher reacts with water to give ethyl achohol again at 100 ∘C 100 ∘ C. You can add a mechanism to your answer: chemistry.stackexchange.com/questions/86760/… Highly active question.

2022年9月15日 · Structural formula of ethanol dehydrating under excess concentrated sulfuric acid at 180 degrees celsius. The products are ethylene and a side product of a water molecule. Under the proper conditions, it is possible for the dehydration to occur between two …

The dehydration reaction of alcohols to generate alkene proceeds by heating the alcohols in the presence of a strong acid, such as sulfuric or phosphoric acid, at high temperatures. The required range of reaction temperature decreases with increasing substitution of …

2015年4月16日 · Sulfuric acid and perchloric acid are much stronger acids than the hydrogen acids (HCl, HBr, HI), which explains why sulfuric acid is commonly used to make olefins from alcohols. Reactions of n-butene and butan-2-ol in dilute acid.

Alcohols react with the strongly acidic hydrogen halides HCl, HBr, and HI, but they do not react with nonacidic NaCl, NaBr, or NaI. Primary and secondary alcohols can be converted to alkyl chlorides and bromides by allowing them to react with a …

2024年10月28日 · Elimination Reactions. Alcohols can also undergo dehydration to form alkenes. Alcohol vapour is passed over a hot (600 C) catalyst of aluminium oxide (Al 2 O 3) powder or pieces of porous pot. Excess hot, concentrated sulfuric acid or phosphoric acid is used as a catalyst. Phosphoric(V) acid is used an alternative dehydrating agent

Primary and secondary alcohols are easily oxidized by a variety of reagents. The most common reagent used for oxidation of secondary alcohols to ketones is chromic acid, H2CrO4. Chromic acid is produced in situ by reaction of sodium dichromate, sulfuric acid and water.

Just says: Alcohols react with inorganic acids (except halogen acids) to form inorganic esters. Organic Chemistry Made Easier! The alkene formation after treatment with sulfuric acid at high temperatures is major product.

2018年9月5日 · In the presence of strong acids (such as sulfuric acid or phosphoric acid), secondary and tertiary alcohols can undergo a dehydration reaction via an E1 mechanism, converting the alcohol into an alkene:

The most common strong acid used for dehydration is concentrated sulfuric acid, even though phosphoric acid and p-toluenesulfonic acid (abbreviated as TsOH) are often used as well. The reaction can follow both E1 and E2 mechanisms depending on whether it is a primary, secondary or a tertiary alcohol.