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Assertion: A mixture of 2-nitrophenol an...

Assertion: A mixture of 2-nitrophenol and 4-nitrophenol can be separated by steam distillation.
Reason: 2-Nitrophenol is intramolecularly hydrogen bonded while 4-nitrophenol is intermolecularly hydrogen bonded.

A

If both assertion and reason are true, and reason is the true explanation of the assertion.

B

If both assertion and reason are true, but reason is not the true explanation o the assertion.

C

if assertion is true, but reason is false.

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we will analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that a mixture of 2-nitrophenol and 4-nitrophenol can be separated by steam distillation. **Explanation**: Steam distillation is a technique used to separate compounds based on their boiling points. If two substances have significantly different boiling points, they can be separated effectively using this method. ### Step 2: Understand the Reason The reason given is that 2-nitrophenol is intramolecularly hydrogen bonded while 4-nitrophenol is intermolecularly hydrogen bonded. **Explanation**: Hydrogen bonding affects the boiling points of compounds. Intramolecular hydrogen bonding (within the same molecule) generally leads to a lower boiling point compared to intermolecular hydrogen bonding (between different molecules), which tends to increase the boiling point due to stronger interactions. ### Step 3: Analyze the Boiling Points - **2-Nitrophenol**: Due to intramolecular hydrogen bonding, it has a lower boiling point. - **4-Nitrophenol**: Due to intermolecular hydrogen bonding, it has a higher boiling point. ### Step 4: Conclusion Since 2-nitrophenol and 4-nitrophenol have different boiling points due to their hydrogen bonding patterns, they can indeed be separated by steam distillation. Therefore, both the assertion and the reason are true, and the reason correctly explains the assertion. ### Final Answer Both the assertion and the reason are true, and the reason is the correct explanation of the assertion. ---
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A mixture of o-nitrophenol and p- nitrophenol can be separated by

Assertion: o- and p -nitrophenol can be separated by steam distillation. Reason: o- nitrophenols have intramolecular hydorgen bonding while p -nitrophenols exists as associated molecules.

(A) A mixture of o-nitrophenol and p-nitrophenol can be separated by steam distillation. (R) o-nitrophenol is steam volatile but p-nitrophenol is not though both are water soluble.

Assertion (A) o-and p-nitrophenol can be separated by steam distillation. Reason (R ) o-Nitrophenol is steam volatile whereas p-nitrophenol is not steam volatile.

Draw intramolecular hydrogen bonding structure in o-nitrophenol .

Knowledge Check

  • A mixture of o-nitrophenol and p-nitrophenol can be separated by

    A
    Sublimation
    B
    Steam distillation
    C
    Fractional crystallisation
    D
    Distillation

  • A mixture of o-nitrophenol and p-nitrophenol can be separated by

    A
    sublimation
    B
    steam distillation
    C
    fractional crystallization
    D
    simple distillation

  • A mixture of o-nitrophenol and p- nitrophenol can be separated by

    A
    Fractional crystallisation
    B
    sublimation
    C
    Chemical disttillation
    D
    steam distillation