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Assertion A molecule containing chiral c...

Assertion A molecule containing chiral carbon must be non-superimposable on its mirror image. ltbr. Reason A chiral carbon is bonded to four different atoms or groups.

A

Both assertion and reason are correct and reason is the correct explanation of the assertion.

B

Both assertion and reason are correct and reason is not the correct explanation of the assertion.

C

Assertion is correct but reason is incorrect

D

Assertion is incorrect but reason is correct

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the assertion and reason provided in the question, we need to break down the statements and evaluate their validity step by step. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "A molecule containing chiral carbon must be non-superimposable on its mirror image." - A chiral carbon is defined as a carbon atom that is bonded to four different atoms or groups. 2. **Evaluating the Assertion**: - The assertion is generally true for most chiral molecules. However, there are exceptions. For example, certain molecules may have chiral centers but can still be superimposable due to symmetry (like meso compounds). - Therefore, the assertion is **not universally true**. 3. **Understanding the Reason**: - The reason states that "A chiral carbon is bonded to four different atoms or groups." - This statement is correct as it accurately describes the definition of a chiral carbon. 4. **Linking Assertion and Reason**: - While the reason is correct, it does not adequately explain the assertion. The assertion claims that all chiral carbon-containing molecules must be non-superimposable, which is not always the case. Thus, the reason does not provide a justification for the assertion. 5. **Conclusion**: - The assertion is **incorrect** because there are exceptions (e.g., meso compounds). - The reason is **correct** as it accurately defines a chiral carbon. - The reason does **not explain** the assertion. ### Final Answer: - Assertion: Incorrect - Reason: Correct - The reason does not explain the assertion.
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Similar Questions

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(A) Molecuels that are not superimposable on their mirror images are chiral. (R) All chiral molecules have chiral centre.

If a molecule contains one carbon atom carrying four different groups it will not have a plane of symmetry and must therefore be chiral. A carbon atom carrying four different groups is a steregoenic or chiral centre. A structure with a plane of symmetry is achiral and superimposable on its mirror image and cannot exist as two enantiomer. A structure without a plane of symmetry is chiral and not superimposable on its mirror image and can exist as two enantiomer. Number of enantiomeric pairs are

Knowledge Check

  • Assertion: Molecules that are not superimposable on their mirror images are chiral. Reason: All chiral molecules hae chiral centres.

    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 explanation for assertion.
    C
    If assertion is correct but reason is incorrect.
    D
    if both assertion and reason are incorrect.
  • A compound whose molecule is superimposabel on its mirror image despite containing chiral carbon atoms is called:

    A
    Threo isomer
    B
    Meso compound
    C
    Enantiomer
    D
    No special name
  • Assertion (A): The stereoisomer's related to each other as non-super imposable mirror images are called enantiomers. Reason (R) : Butan-2-ol has four different groups attached to the tetrahedral carbon and is chiral.

    A
    Both Assertion (A) and Resort (R) are correct statements, quid Reason (R) is the correct explanation of the Assertion (A).
    B
    Both Assertion (A) and Reason (R) are correct statements, brit Reason (R) is not the correct explanation of the Assertion (A).
    C
    Assertion (A) is correct, but Reason (R) is incorrect statement.
    D
    Assertion (A) is incorrect, but Renson (R) is correct statement.
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    Statement I: Molecules that are non-superimposable on their mirror images are chiral. Statement II: All chiral molecules have chiral centres.

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