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Q.

Glacial acetic acid is:


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a

100% acetic acid-free of water

b

Solidified acetic acid

c

Gaseous acetic acid

d

Frozen acetic acid 

answer is A.

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Detailed Solution

Concept: We need to be aware that glacial acetic acid has the chemical formula Question Image 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 16.7 °C . The melting point of acetic acid is lowered by 0.2 °C when the water is removed.
As a result, glacial acetic acid is completely free of water.
Hence, the correct answer is option 1.
 
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