Question 1

What is Rosenmund reduction?

Accepted Answer

Rosenmund reduction is a catalytic hydrogenation chemical reaction in which an acyl chloride is selectively reduced to an aldehyde using hydrogen gas over a palladium catalyst poisoned with barium sulfate. The barium sulfate deactivates the catalyst partially to prevent further reduction of the form

Question 2

Why are aldehydes more reactive than ketones towards nucleophilic addition reactions?

Accepted Answer

Aldehydes are more reactive than ketones towards nucleophilic addition reactions due to two primary factors: electronic and steric. Electronically, aldehydes have only one alkyl group which exhibits electron-releasing inductive effect, whereas ketones have two alkyl groups that increase electron den

Question 3

What is Tollens' reagent? Write its chemical composition.

Accepted Answer

Tollens' reagent is an ammoniacal silver nitrate solution, which is freshly prepared by mixing aqueous silver nitrate with sodium hydroxide solution until a brown precipitate of silver oxide forms, followed by the dropwise addition of dilute aqueous ammonia solution until the precipitate completely

Question 4

What is Cannizzaro reaction? Give one example.

Accepted Answer

Cannizzaro reaction is a disproportionation reaction undergone by aldehydes that do not possess any alpha hydrogen atoms when treated with a concentrated alkali solution. During this redox process, one molecule of the aldehyde undergoes oxidation to form a carboxylic acid salt, while another molecul

Question 5

Why do carboxylic acids have higher boiling points than corresponding alcohols?

Accepted Answer

Carboxylic acids possess significantly higher boiling points compared to alcohols of comparable molecular masses primarily because carboxylic acid molecules form extremely strong intermolecular hydrogen bonding. In fact, they commonly exist as stable cyclic dimers in the liquid and vapor phases due

Aldehydes, Ketones and Carboxylic Acids