Solution:
Concept: We need to be aware that glacial acetic acid has the chemical formula
and is a concentrated form of acetic acid solution. A pyroligneous liquid produced during the distillation of wood can be used to create glacial acetic acid. By pouring acetic acid over a stalactite of solid acetic acid, we can also create glacial acetic acid.The Acetic acid that is anhydrous (water-free) or glacial acetic acid has an extremely low water content (less than 1%). It is known as glacial because it crystallises into solid acetic acid at a temperature just below that of room temperature, which is . The melting point of acetic acid is lowered by when the water is removed.
As a result, glacial acetic acid is completely free of water.
Hence, the correct answer is option 1.
