
Which of the following reactions is called Rosenmund reaction?
a.) Aldehydes are reduced to alcohols.
b.) Acids are converted to acid chlorides.
c.) Alcohols are reduced to hydrocarbons.
d.) Acid chlorides are reduced to aldehydes.
Answer
517.5k+ views
Hint: Rosenmund reaction involves the conversion of that compound which contains a halogen atom. The product formed after the reaction is the molecule which upon further reduction gives us alcohol.
Complete answer: To find out the correct option, we should know about what is Rosenmund reaction. So, first of all, let’s see this.
Rosenmund reaction is a hydrogenation reaction. Now the question arises what is hydrogenation. Hydrogenation is a process that involves the addition of hydrogen atoms across a double or triple bond. The Rosenmund reaction involves selectively reduction of acyl chloride to an aldehyde.
The Pd metal on is called Rosenmund reagent.
In the above reaction what happens is that a molecule of an acyl chloride is reduced to a molecule of aldehyde in the presence of hydrogen gas over palladium metal surface poisoned by barium sulphate.
So, the correct answer is “Option D”.
Additional Information: Rosenmund catalyst can be prepared by the reduction of palladium(II) chloride solution in the presence of . The has a low surface area which reduces the activity of palladium metal. This helps in prevention of over-reduction.
Note: We can prepare a large number of aldehydes by this method but formaldehyde can-not be prepared by this method because for the formation of formaldehyde; we require formyl chloride which will be reduced to formaldehyde. The formyl chloride is not stable at room temperature. So, this reaction is not possible.
Complete answer: To find out the correct option, we should know about what is Rosenmund reaction. So, first of all, let’s see this.
Rosenmund reaction is a hydrogenation reaction. Now the question arises what is hydrogenation. Hydrogenation is a process that involves the addition of hydrogen atoms across a double or triple bond. The Rosenmund reaction involves selectively reduction of acyl chloride to an aldehyde.
The Pd metal on

In the above reaction what happens is that a molecule of an acyl chloride is reduced to a molecule of aldehyde in the presence of hydrogen gas over palladium metal surface poisoned by barium sulphate.
So, the correct answer is “Option D”.
Additional Information: Rosenmund catalyst can be prepared by the reduction of palladium(II) chloride solution in the presence of
Note: We can prepare a large number of aldehydes by this method but formaldehyde can-not be prepared by this method because for the formation of formaldehyde; we require formyl chloride which will be reduced to formaldehyde. The formyl chloride is not stable at room temperature. So, this reaction is not possible.
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
Recently Updated Pages
Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Biology: Engaging Questions & Answers for Success

Master Class 12 Physics: Engaging Questions & Answers for Success

Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Trending doubts
Which one of the following is a true fish A Jellyfish class 12 biology CBSE

Which are the Top 10 Largest Countries of the World?

a Tabulate the differences in the characteristics of class 12 chemistry CBSE

Why is the cell called the structural and functional class 12 biology CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Derive an expression for electric potential at point class 12 physics CBSE
