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Solubility in Ammonia (Group 1)

Why dry ether...

Question

Why dry ether is used in Wurtz reaction?

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Solution

Wurtz reaction is carried out with sodium metal which is highly reactive, hence, we have to select a solvent which will not react with the sodium metal. ... it requires an aprotic solvent as the medium of the reaction.Dry ether proves to be a very good non-polar, aprotic solvent for this purpose.HENCE DRY ETHER IS USED.

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Q. Which of the following(s) depicts the reason for the use of dry ether as solvent in Wurtz reaction?

Q. Assertion :The reaction,

C_{2} H_{5} B r + 2 N a + C_{2} H_{5} B r \to C_{4} H_{10} + 2 N a B r

is known as Wurtz reaction. Reason: The reaction is carried out in presence of dry ether.

t

-Butyl romide on reaction with sodium metal in dry ether gives

2, 2, 3, 3

-tetramethyl butane Reason:

t

-Alkyl halides readily undergo Wurtz reaction.

Q. Wet ether is not used as a solvent in Wurtz reaction because of the water present in it_____________.

Q. The correct match is :

	List-I		List-II
A	$C_{2} H_{5} C l$	1	Williamson synthesis
B	R-X+Mg+dry ether	2	Wurtz reaction
C	$C_{2} H_{5} C l + C_{2} H_{5} O N a$	3	Anaesthetic
D	Na+dry ether	4	Antiseptic
		5	Grignard reagent

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