Aldehydes can be synthesized by the oxidation of:
Correct answer: A. Primary alcohols
- A. Primary alcohols
- B. Secondary alcohols
- C. Organic acids
- D. Inorganic acids
Explanation
Consider any 1° alcohol. For simplicity consider it to be open-chain alcohol. There we find the Carbon atom directly attached to the -OH group has 2H atoms. And now oxidation occurs, one H gets removed from the Oxygen atom and the other H from the remaining 2.Thereby formation of a -HC=O, which is an Aldehyde. Again on oxidation of aldehydes, Oxygen gets attached to the Carbon directly attached to the -OH group thereby giving you carboxylic Acid. So basically oxidation is the main and the only factor which we find here and it is nothing but the removal of H atoms or addition of O atoms.
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Preparation of Aldehydes and Ketones
Aldehydes and ketones are prepared mainly by controlled oxidation or dehydrogenation of primary and secondary alcohols, respectively. The topic also includes ozonolysis of alkenes, hydration of alkynes and preparation through acyl derivatives, with attention to why primary alcohols can give aldehydes whereas secondary alcohols give ketones.
Practise Aldehydes and Ketones
679 free Aldehydes and Ketones MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Preparation of Aldehydes and Ketones questions
Dry distillation of calcium acetate results in the formation of_________________?
Formalin is ___________ solution of formaldehyde in water?
Formaldehyde and lactose are combined to produce throat lozenges named as__________________?
Which of the following is used to make chloral hydrate?
In the conversion of ethylene into acetaldehyde, cupric chloride acts as:
Dry distillation of a mixture of calcium salts of formic acid and acetic acid results into the formation of: