How will you prepare following compounds starting from acetylene? (1.5+1.5)a. Acetaldehyde b. Acetic acid

To prepare acetaldehyde starting from acetylene, you can follow the following steps:

1. Convert acetylene to vinyl alcohol: a. React acetylene with water in the presence of mercuric sulfate catalyst to form vinyl alcohol. b. The reaction is carried out under acidic conditions.

2. Convert vinyl alcohol to acetaldehyde: a. Oxidize vinyl alcohol using an oxidizing agent such as chromic acid (H2CrO4) or potassium permanganate (KMnO4). b. The oxidation reaction converts the vinyl alcohol to acetaldehyde.

To prepare acetic acid starting from acetylene, you can follow the following steps:

1. Convert acetylene to acetaldehyde: a. Follow the steps mentioned above to prepare acetaldehyde from acetylene.

2. Convert acetaldehyde to acetic acid: a. Oxidize acetaldehyde using an oxidizing agent such as potassium dichromate (K2Cr2O7) or silver oxide (Ag2O). b. The oxidation reaction converts acetaldehyde to acetic acid.

Please note that these are general methods for preparing acetaldehyde and acetic acid from acetylene. There may be alternative methods or variations depending on the specific conditions and reagents used.