What is the action of dilute h2so4 on ethene?

On treatment with dilute H2SO4, ethene forms ethanol.

Ethene is passed into concentrated sulfuric acid To make ethyl hydrogensulphate (as above). The product is diluted with water and then distilled. The water reacts with the ethyl hydrogensulphate to produce ethanol which distils off.

The electrophilic addition reaction between ethene and sulfuric acid. Alkenes react with concentrated sulfuric acid in the cold to Produce alkyl hydrogensulphates. For example, ethene reacts to give ethyl hydrogensulphate.

Addition of sulphuric acid to alkene

Cold concentrated sulphuric acid adds to alkenes in accordance with Markovnikov rule To form hydrogen sulphate by elecrophilic addition reaction.

Sulfuric acid is very reactive and Dissolves most metals, it is a concentrated acid that oxidizes, dehydrates, or sulfonates most organic compounds, often causes charring. Sulfuric acid reacts violently with alcohol and water to release heat.

H2SO4 forms a compound, Isopropyl- hydrogen sulphate on heating with water gives propan-2-ol.

1 Answer. Concentrated sulphuric acid Oxidises hydrobromic acid to bromine. It oxidises hydroiodic acid to iodine.

Alkenes react with concentrated sulphuric acid in the cold To produce alkyl hydrogensulphates. Ethene reacts to give ethyl hydrogensulphate. The structure of the product molecule is sometimes written as CH₃CH₂HSO₄, but the version in the equation is better because it shows how all the atoms are linked up.

Dilute sulfuric acid contains water. The ions present in this mixture are H ⁺ And OH ^– (from the water) and H ⁺ And SO ₄ ^2– From the sulfuric acid.

To simplify the rule, it can also be stated as – “Hydrogen is added to the carbon with the most hydrogens and the halide is added to the carbon with the least hydrogens”. An example of a reaction that observes Markovnikov’s rule is the addition of hydrobromic acid (HBr) to propene, which is shown below.

How Sulphuric acid is produced? Sulphuric acid is produced from sulphur. In the presence of air, sulphur dioxide is first obtained by burning the molten sulphur. In the presence of a catalyst for vanadium pentoxide, sulphur dioxide is then converted to sulphur trioxide.

Ethers Form oxonium salts When reacted with cold, concentrated sulfuric acid.

When propyne is treated with dilute sulphuric acid in presence of mercury II sulphate, the major product is Acetone.

Propan-2-ol can be dehydrated to give propene by Heating it with an excess of concentrated sulphuric acid at about 170°C.

H2SO4 acts as moderately strong oxidizing agent. It Oxidizes both metals and non-metals.

Answer: Zinc does liberate hydrogen gas at room temperature when it comes in contact with dilute sulphuric acid, as it does with hydrochloric acid. But when the metal is heated with concentrated sulphuric acid, the latter is Reduced to sulphur dioxide.

Zn + H2SO4 (dil) = ZnSO4 + H2 But when the metal is heated with concentrated sulfuric acid, the latter is Reduced to sulfur dioxide. Zn + 2HSO4(conc) = ZnSO4 + SO2 + 2H2O This is a redox reaction as conc. H2SO4 acts as an oxidising agent at high temperatures (hot condition).

Concentrated sulfuric acid is used as a catalyst, and has a dual role: Speeds up the reaction. Acts as a dehydrating agent, forcing the equilibrium to the right and resulting in a greater yield of ester.

Sulphuric acid Acts as a nucleophile. A nucleophile is usually charged negatively with a lone couple of donatable electrons. An anion is always a better nucleophile than that of a neutral molecule, so a better nucleophile is always the conjugate base.

Sulphuric acid Acts as a nucleophile. A nucleophile is usually charged negatively with a lone couple of donatable electrons. An anion is always a better nucleophile than that of a neutral molecule, so a better nucleophile is always the conjugate base.

Sulphuric acid acts as A nucleophile. A nucleophile is usually charged negatively with a lone couple of donatable electrons.

The slightly positive hydrogen atom in the sulphuric acid acts as an electrophile, and is strongly attracted to the electrons in the pi bond. The electrons from the pi bond move down towards the slightly positive hydrogen atom.

Alkene hydration with dilute sulfuric acid. All alkene react with dilute sulfuric acid and give alcohols. This is a hydration reaction. A water molecule is added through double bond and may give primary, secondary or tertiary alcohols.