MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12
        












Analytical Tests for Alcohols

9 years ago

Answers : (1)

Sachin Tyagi
31 Points
							

The presence of a hydroxyl group in an unknown organic compound may be detected with the help of following tests. If the compound is a slid it is dissolved in an inert solvent, e.g., dry ether or benzene.

i) Alcohols are neutral substances towards litmus:- the colour of blu or red litmus does not change when alcohol is added to it.

ii) Ceric ammonium nitrate test:- the freshly prepared solution of ceric ammonium nitrate has yellow color. When few drops of this reagent are added to the given compound or its solution if color changes from yellow to red the compound contains a hydroxyl group.

iii) Sodium metal test: - A small piece of sodium metal is added to the compound or its solution. Evolution of hydrogen gas indicates the presence of –OH group in the organic compound.

iv) Phosphorus pentachloride test:- phosphorus pentachloride is added to the given compound or its solution, if it becomes warm with volution of hydrogen chloride, the organic compound contains a hydroxyl group.

v) Acylation test:- acetyl chloride or benzoyl chloride is added to the given compound or its solution, if hydrogen chloride is evolved, it shows that the organic compound is an alcohol.

9 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 3,180 off

COUPON CODE: SELF20


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 70 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Get Extra Rs. 424 off

COUPON CODE: SELF20

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details