54. The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha carbon, is:
(1) A carbonyl compound with a hydrogen atom on its alpha-carbon never equilibrates with its correspondingenol.
(2) A carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its correspondingenol and this process is known as aldehyde-ketone equilibration.
(3) A carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its correspondingenol and this process is known as carbonylation.
(4) A carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its correspondingenol and this process is known as keto-enol tautomerism.