Question

Позначте речовини з кими буде реагувати бут-2-ен * хлороводень, бром, сульфатна кислота воднь, бром, хлороводень натрій гідроксид, водень, бром ацетилен, водень, бром

Answer 1

Chemical Reactions of But-2-ene with Various Substances

But-2-ene is an organic compound with the chemical formula C4H8. It is an alkene, which means it contains a carbon-carbon double bond. Let's explore the reactions of but-2-ene with the substances you've mentioned.

1. Reaction with Hydrochloric Acid (HCl): - But-2-ene will undergo an addition reaction with hydrochloric acid to form a chloroalkane. - The reaction can be represented as: ``` C4H8 + HCl → C4H9Cl ``` - This is an example of an electrophilic addition reaction, where the hydrogen from HCl adds to one carbon of the double bond, and the chlorine adds to the other carbon.

2. Reaction with Bromine (Br2): - But-2-ene will also undergo an addition reaction with bromine to form a dibromoalkane. - The reaction can be represented as: ``` C4H8 + Br2 → C4H8Br2 ``` - This reaction is commonly known as bromination of alkenes.

3. Reaction with Sulfuric Acid (H2SO4): - But-2-ene can undergo an electrophilic addition reaction with concentrated sulfuric acid to form a sulfonic acid. - The reaction involves the addition of the H2SO4 molecule across the double bond, leading to the formation of a sulfonic acid compound.

4. Reaction with Sodium Hydroxide (NaOH): - But-2-ene will not react directly with sodium hydroxide under normal conditions. Alkenes typically do not react with bases like NaOH.

5. Reaction with Hydrogen (H2) in the Presence of a Catalyst: - But-2-ene can undergo hydrogenation in the presence of a suitable catalyst (e.g., palladium or nickel) to form butane. - The reaction can be represented as: ``` C4H8 + H2 → C4H10 ``` - This is an example of an addition reaction where the double bond is broken, and hydrogen atoms are added to the carbon atoms.

6. Reaction with Acetylene (C2H2): - But-2-ene will not directly react with acetylene under normal conditions. Alkenes typically do not react with alkynes like acetylene.

In summary, but-2-ene can undergo addition reactions with hydrochloric acid, bromine, and sulfuric acid, while it does not react directly with sodium hydroxide or acetylene. Additionally, it can undergo hydrogenation in the presence of a suitable catalyst.

I hope this information helps! If you have further questions or need more details about any specific reaction, feel free to ask.