The reaction is :- Ethyl Alcohal = C2H5OH C2H5OH + Conc.H2SO4 --> C2H4 + H2O

For example, if you heat the secondary alcohol propan-2-ol with sodium or potassium dichromate(VI) solution acidified with dilute sulfuric acid, propanone is formed.

But today I came across another reaction.

$\ce{CH3CH2OH + H2SO4 -> C2H5OC2H5}$ Here product is ether an happens at 413 K temperature.

Secondary alcohols are oxidized to ketones - and that's it. All you need to do is to learn the structure of sulphuric acid. If you see a tertiary or secondary alcohol with H2SO4, TsOH, or H3PO4(and especiallyif you see “heat”) think: carbocation formation followed by elimination reaction (E1).

When Ethyl alcohal, that us commonly known as Ethanol reacts with Conc.H2SO4, Concetrated Sulphuric acid, then it forms Ethene along with water. Alcohol (R-CH2-OH) is a good nucleophile, because the oxygen atom possesses two lone-pair electrons. It includes the conversion of the product into an alcohol. You need to use an excess of the oxidising agent and make sure that the aldehyde formed as the half-way product stays in the mixture. This page looks at the reaction of the carbon-carbon double bond in alkenes such as ethene with concentrated sulphuric acid. Alcohol H,SO4 → CH3-CH=CH2 180°C c. Alcohol H2SO4 → CH3-CH2-0-CH2-CH3 140°C d. Alcohol H2SO4… Answered: H2SO4 a. The alcohol is heated under reflux with an excess of the oxidising agent. When the reaction is complete, the carboxylic acid is distilled off. I knew two chemical reactions of alcohol with sulfuric acid $\ce{CH3CH2OH + H2SO4 -> CH2CH2}$ Here product is having a double bond (ethene) and this reaction happens at 443 K temperature.

Secondary alcohols. Alcohol CH3-CH=C-CH3 180°C ČH3 b.

Full oxidation to carboxylic acids.

And if you see that a more stable carbocation could be formed through migration of an adjacent H …

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