Question

Ch3-ch3 -> ch2=ch2->ch2cl-ch2cl

Answer 1

CH₃-CH₃→CH₂=CH₂→CH₂CI-CH₂CI

CH₃-CH₃→CH₂=CH₂+H₂ (дегидрогенизация)

CH₂=CH₂+CI₂→CH₂CI-CH₂CI (присоединение хлора)

Answer 2

The chemical reaction you have provided seems to be the conversion of propane (C3H8) to ethylene (C2H4) and then to 1,2-dichloroethane (C2H4Cl2). Let's break down the steps of the reaction:

1. Ch3-ch3: This represents propane, which is a three-carbon alkane molecule with the chemical formula C3H8.

2. Ch3-ch3 -> ch2=ch2: This represents the dehydrogenation of propane, converting it into ethylene, also known as ethene. The reaction removes two hydrogen atoms to form a carbon-carbon double bond, and the chemical formula changes from C3H8 to C2H4.

3. Ch2=ch2 -> ch2cl-ch2cl: This is the reaction of ethylene with chlorine gas (Cl2) to form 1,2-dichloroethane. The double bond of ethylene opens up, and two chlorine atoms replace the two hydrogen atoms, resulting in the formation of 1,2-dichloroethane with the chemical formula C2H4Cl2.

Overall, the complete reaction can be written as follows:

C3H8 (propane) -> C2H4 (ethylene) -> C2H4Cl2 (1,2-dichloroethane)