Alcohol, Phenol and Ether Test

Result

Alcohol, Phenol and Ether Test - 7

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements is/are correct regarding the preparation of ethers?

A
Ethers can be prepared by dehydration of alcohols.

B
Ethers can be prepared by the reaction of diazomethane with acetic acid.

C
Ethers can be prepared by heating allyl halides with dry ferrous sulphide.

D
Both (1) and (2)

Solution

Alcohols undergo dehydration in the presence of protic acids (H₂SO₄, H₃PO₄). The formation of the reaction product, alkene or ether depends on the reaction conditions.
Question 2
1 / -0

Which of the following has approximately the same solubility in water as n-butyl alcohol?

A
Dimethyl ether

B
Diethyl ether

C
Diisopropyl ether

D
Diphenyl ether

Solution

Due to H-bonding between H₂O and ether molecules, lower ethers such as dimethyl ether and ethyl methyl ether are completely miscible in water. The solubility of other lower ethers (i.e. diethyl ether) is comparable to that of corresponding alcohols (i.e. n-butyl alcohol). However, as the molecular mass increases, the solubility of ethers in H₂O decreases due to a corresponding increase in the hydrocarbon portion of the molecule.