Write the reaction equation: Methane – acetylene – acetaldehyde – ethanol – chloroethane – butane

1) When exposed to temperature, methane decomposes into acetylene and hydrogen:

2CH4 → C2H2 + 4H2 ↑;

2) To get acetaldehyde from acetylene, you need to add water:

C2H2 + H2O → CH3CHO;

3) Hydrogen is added to acetaldehyde to obtain ethanol:

CH3CHO + H2 → C2H5OH;

4) When ethanol interacts with hydrochloric acid, we observe the formation of chloroethane with butane:

C2H5OH + HCl → C2H5Cl + H2O;

5) Chloroethane reacts with metallic sodium to form butane and sodium chloride:

2C2H5Cl + 2Na → C4H10 + 2NaCl.