Concept explainers
(a)
Interpretation: The test to distinguish
Concept Introduction :
(a)
Answer to Problem 66E
Explanation of Solution
When bromine adds to alkene, the red colour of bromine lost due to boning of bromine to alkene. This is an indication of alkene.
The reaction is as follows:
But on addition of bromine to alkane, its red colour will not no away.
(b)
Interpretation: The test to distinguish
Concept Introduction : Carboxylic acid can be distinguished from
(b)
Answer to Problem 66E
Explanation of Solution
On reaction of butanoic acid with neutral
But ketone does not show this test.
(c)
Interpretation: The test that distinguishes
Concept Introduction : In iodoform reaction, the organic compound is added to mixture of iodine and dilutes NaOH.
(c)
Answer to Problem 66E
Iodoform test distinguishes between
Explanation of Solution
Iodoform test distinguishes between alcohol and ketone.
Ketones form yellow precipitate of iodoform in iodoform test.
The reaction is shown below.
The alcohols do not undergo iodoform test.
(d)
Interpretation: The test that distinguishes
Concept Introduction: In carbylamines reaction,
(d)
Answer to Problem 66E
Carbylamine test distinguishes
Explanation of Solution
Amines react with chloroform and a solution of potassium hydroxide (KOH) to produce a bad odour (Carbyamine test) but ether does not undergo this test.
But ether does not undergo this reaction.
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Chapter 21 Solutions
Chemical Principles
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