Question

Ch4-c2h2-c2h4-c2h4cl2-c2h4(oh)2

Answer 1

1) 2CH₄ --(1500°C)--> HCΞCH + 3H₂î

2) HCΞCH + H₂ --(t, Ni)-->H₂C=CH₂

3) H₂C=CH₂ + Cl2 --(hv)--> H₂C-CH₂

                                              |       |

                                             Cl    Cl

4) H₂C-CH₂ + 2NaOH --(t)-->  H₂C-CH₂ + 2NaCl

       |      |                                    |      |

     Cl    Cl                                OH  OH

Answer 2

The sequence of compounds you provided is as follows:

1. CH4: Methane

   • Methane is the simplest hydrocarbon, consisting of one carbon atom bonded to four hydrogen atoms. It is a colorless and odorless gas, commonly known as natural gas.

2. C2H2: Ethyne or Acetylene

   • Ethyne, also known as acetylene, is a hydrocarbon with a triple bond between two carbon atoms. It is a colorless gas and is commonly used in welding and as a raw material in the chemical industry.

3. C2H4: Ethene or Ethylene

   • Ethene, also known as ethylene, is a hydrocarbon with a double bond between two carbon atoms. It is a colorless gas and is widely used in the production of plastics, solvents, and various organic chemicals.

4. C2H4Cl2: Dichloroethane

   • Dichloroethane is a chlorinated hydrocarbon that contains two chlorine atoms attached to two carbon atoms. It is a colorless liquid and is primarily used as a solvent and in the production of vinyl chloride, which is further used in the manufacturing of polyvinyl chloride (PVC).

5. C2H4(OH)2: Ethylene glycol

   • Ethylene glycol is a diol compound with two hydroxyl groups (-OH) attached to a central ethylene (C2H4) backbone. It is a colorless, odorless, and sweet-tasting liquid. Ethylene glycol is widely used as an antifreeze and coolant in automotive engines, as well as in the production of polyester fibers and resins.

Each compound in the sequence represents a different molecule with its own unique chemical structure and properties.