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Physical Properties of Alcohols and Phenols

In which one ...

Question

In which one of the following keto-enol system is the keto form more stable than the enol form?

$C H_{3} - C H_{2} - O | | C - C H_{3} ⇌ C H_{3} - C H_{2} - O H | C = C H_{2}$

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Solution

The correct option is A
$C H_{3} - C H_{2} - O | | C - C H_{3} ⇌ C H_{3} - C H_{2} - O H | C = C H_{2}$

In b,c,d enol form is more stable due to aromatic structure, a is the only compound which has keto form more stable than enol form

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Similar questions

C H_{2} = C H - + C H_{2} and C H_{2} = C H - C H_{2} - + C H_{2}

C H_{3} - N H - + C H_{2} and + C H_{2} - O H

C H_{3} - O - C H_{2} - + C H_{2} and C H_{2} - O - + C H_{2}

C H_{3} - + C H - C H_{2} C H_{2} C H_{3} and C H_{3} C H_{2} - + C H - C H_{2} C H_{3}

C H_{3} O \oplus C H_{2}

C H_{3} \oplus C H_{2}

{M e}_{2} \oplus C H

C H_{3} C H_{2} \oplus C H_{2}

C H_{2} = C H - \oplus C H_{2}

C H_{3} C H_{2} \oplus C H_{2}

C H_{2} = \oplus C H

C H_{3} \oplus C H_{2}

C H_{3}

C H_{3}

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C H_{3} - C - C H_{2} - B r + N a O H ⟶ C H_{3} - C - C H_{2} - C H_{3}

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C H_{3}

O H

C H_{3} - C H_{3} | C | C H_{3} - C H_{2} - B r + N a O H \to C H_{3} - C H_{3} | C | C H_{3} - C H_{2} - O H

C H_{2} = O H | C - C H_{2} - O | | C - C H_{3} ⇌ C H_{3} - O | | C - C H_{2} - O | | C - C H_{3} ⇌ C H_{3} - O H | C = C H - O | | C - C H_{3}

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