Home
Class 12
CHEMISTRY
Assertion : Ethers behave as lewis bases...

Assertion : Ethers behave as lewis bases in the presence of mineral acids.
Reason : Due to the presence of alkyl groups on the both sides of oxygen atom.

A

If both assertion and reason are correct and reason is correct explanation for assertion.

B

If both assertion and reason are correct but reason is not correct for assertion.

C

If assertion is correct but reason is incorrect.

D

If both assertion and reason are incorrect.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that "Ethers behave as Lewis bases in the presence of mineral acids." - **Explanation**: Ethers are organic compounds that contain an oxygen atom connected to two alkyl or aryl groups (R-O-R'). The oxygen atom in ethers has two lone pairs of electrons. When ethers are exposed to mineral acids (like HCl, HBr, or HI), they can donate one of their lone pairs to the hydrogen ion (H⁺) from the acid, thus acting as a Lewis base. ### Step 2: Understand the Reason The reason states that "Due to the presence of alkyl groups on both sides of the oxygen atom." - **Explanation**: While it is true that ethers have alkyl groups, the reason provided does not accurately explain why ethers behave as Lewis bases. The ability of ethers to act as Lewis bases is primarily due to the lone pairs of electrons on the oxygen atom, not specifically because of the alkyl groups. The alkyl groups can influence the reactivity and stability of the ether but do not directly cause the Lewis base behavior. ### Step 3: Conclusion Based on the analysis: - The assertion is correct: Ethers do behave as Lewis bases in the presence of mineral acids. - The reason is incorrect: The behavior is due to the lone pairs on the oxygen, not the presence of alkyl groups. Therefore, the correct answer is that the assertion is correct, but the reason is incorrect. ### Final Answer: Assertion is correct, but the reason is incorrect. ---

To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that "Ethers behave as Lewis bases in the presence of mineral acids." - **Explanation**: Ethers are organic compounds that contain an oxygen atom connected to two alkyl or aryl groups (R-O-R'). The oxygen atom in ethers has two lone pairs of electrons. When ethers are exposed to mineral acids (like HCl, HBr, or HI), they can donate one of their lone pairs to the hydrogen ion (H⁺) from the acid, thus acting as a Lewis base. ### Step 2: Understand the Reason ...
Promotional Banner

Similar Questions

Explore conceptually related problems

(A) Ether behaves as bases in the presence of mineral acids. (R ) Due to the presence of lone pair of electrons on oxygen.

(A) Ether behaves as bases in the presence of mineral acids. (R ) Due to the presence of lone pair of electrons on oxygen.

State true or false : Silicones repel water due to: The presence of alkyl group pointed towards surface

Assertion (A): Hydrolyiss of ethyl acetate in the presence of acid is a reaction of first order whereas in the presence of alkali, it is a reaction of second order. Reason (R ): Acid acts as catalyst only whereas alkali act as one of the reactant.

Ammonia acts as a Lewis base due to the presence of lone pair of electrons on N-atom.(T/F)

Consider the following statements: Assertion (A) The velocity of sound in air increases due to the presence of moisture in it. Reason (R ): The presence of moisture in air lowers the density of air. Of these statements-

Assertion Green edge flame rest tells presence of borate ion. Reason: Green colour of the flame is due to burining of tri ethyl borate.

alpha -Amino acids behave as crystalline ionic solid and have high melting point due to the presence of:

Assertion : Geometry of IC l_(3) is tetrahedral. Reason : Its shape is T-shape, due to the presence of two lone pairs.

Assertion : Geometry of IC l_(3) is tetrahedral. Reason : Its shape is T-shape, due to the presence of two lone pairs.