Email
Chat with tutor
logo

Ask Questions, Get Answers

X
 
Answer
Comment
Share
Q)

List the methods to Test to distinguish aldehydes and ketone

List the methods to Test to distinguish aldehydes and ketones.

1 Answer

Comment
A)

Tollen’s test: When an aldehyde is heated with Tollen’s reagent it forms silver mirror.  Tollen’s reagent is ammoniacal solution of AgNO3.

Ketones do not form silver mirror and hence do not give this test

Fehling’s test: When an aldehyde is heated with Fehling’s reagent it forms reddish brown precipitates  of cuprous oxide. Fehling’s reagent: Fehling solution A (aqueous solution of CuSO4) + Fehling solution B (alkaline solution of sodium potassium tartarate)

Ketones do not give this test

Help Clay6 to be free
Clay6 needs your help to survive. We have roughly 7 lakh students visiting us monthly. We want to keep our services free and improve with prompt help and advanced solutions by adding more teachers and infrastructure.

A small donation from you will help us reach that goal faster. Talk to your parents, teachers and school and spread the word about clay6. You can pay online or send a cheque.

Thanks for your support.
Continue
Please choose your payment mode to continue
Home Ask Homework Questions
Your payment for is successful.
Continue
Clay6 tutors use Telegram* chat app to help students with their questions and doubts.
Do you have the Telegram chat app installed?
Already installed Install now
*Telegram is a chat app like WhatsApp / Facebook Messenger / Skype.
...