What is formed when a primary alcohol undergoes catalytic dehydrogenation ? [1993]a)Aldeh ydeb)Ketonec)Alkened)AcidCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

In hydrogenation  the primary  alcohol    convert  into aldehyde  but how dehydrogenation?  cause this...

Answer

Dehydrogenation of Primary Alcohol:

Dehydrogenation of a primary alcohol involves the removal of hydrogen from the alcohol molecule. This process is typically carried out under catalytic conditions using a suitable catalyst.

Formation of Aldehyde:

When a primary alcohol undergoes catalytic dehydrogenation, the resulting product is an aldehyde. This is because the removal of hydrogen from the alcohol leads to the formation of a carbonyl group, resulting in the conversion of the alcohol to an aldehyde.

Example:

For example, when ethanol (a primary alcohol) undergoes catalytic dehydrogenation, it forms acetaldehyde. The reaction can be represented as follows:
CH3CH2OH → CH3CHO + H2

Explanation:

The dehydrogenation process involves the breaking of a C-H bond in the alcohol molecule, resulting in the formation of a carbonyl group (C=O) in the aldehyde product. This process is commonly used in organic chemistry to convert primary alcohols to aldehydes, which can then be further oxidized to carboxylic acids if desired.

Therefore, when a primary alcohol undergoes catalytic dehydrogenation, the product formed is an aldehyde.

Answer

1° Alcohols on catalytic dehydrogenation give aldehydes.

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