Question

Aldehydes do not form stable hydrates but chloral exists as chloral hydrate

Answer 1

Because chloral compounds are more reactive than aldehydes

Answer 2

Hey dear,

● Answer -
Cause formation of aldehyde hydrates is reversible reaction while formation of chloral hydrate is irreversible.

● Explaination -
Aldehydes react with water to form aldehyde hydrate.
R-CHO + H2O ↔ R-CH(OH)2

However, these hydrates are unstable and reaction gets reversed to formation of aldehydes again.

Whereas chloral reacts with water to form hydrate which is stable.
CCl3-CHO → CCl3-C(OH)2


Hope this helps you.
Keep asking..