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The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.

Q. Phenol can be distinguished from ethanol by the reaction with _____
  • a)
    Br2/water
  • b)
    Na
  • c)
    Glycerol
  • d)
    All of the above
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
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Phenol decolourises bromine water to form white precipitate of 2,4,6-tribromophenol whereas ethanol does not precipitate.
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Phenol vs Ethanol Reaction with Br2/water
Phenol can be distinguished from ethanol by the reaction with Br2/water. When phenol reacts with Br2/water, it undergoes a bromination reaction to form a white precipitate of 2,4,6-tribromophenol. On the other hand, ethanol does not react with Br2/water under similar conditions.

Explanation
- Phenol, being an aromatic compound, undergoes electrophilic aromatic substitution reactions due to the presence of a delocalized pi electron system.
- In the presence of Br2/water, phenol reacts to form 2,4,6-tribromophenol due to the substitution of hydrogen atoms with bromine atoms on the aromatic ring.
- Ethanol, being a simple alcohol, does not have the aromatic ring structure necessary for electrophilic aromatic substitution reactions. Therefore, ethanol does not react with Br2/water to form a similar product.
In conclusion, the reaction of phenol with Br2/water to form 2,4,6-tribromophenol is a distinctive test to differentiate between phenol and ethanol.
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Read the passage given below and answer the following questions:The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.Q. Phenol can be distinguished from ethanol by the reaction with _____a)Br2/waterb)Nac)Glycerold)All of the aboveCorrect answer is option 'A'. Can you explain this answer?
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Read the passage given below and answer the following questions:The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.Q. Phenol can be distinguished from ethanol by the reaction with _____a)Br2/waterb)Nac)Glycerold)All of the aboveCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Read the passage given below and answer the following questions:The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.Q. Phenol can be distinguished from ethanol by the reaction with _____a)Br2/waterb)Nac)Glycerold)All of the aboveCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the passage given below and answer the following questions:The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.Q. Phenol can be distinguished from ethanol by the reaction with _____a)Br2/waterb)Nac)Glycerold)All of the aboveCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Read the passage given below and answer the following questions:The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.Q. Phenol can be distinguished from ethanol by the reaction with _____a)Br2/waterb)Nac)Glycerold)All of the aboveCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Read the passage given below and answer the following questions:The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.Q. Phenol can be distinguished from ethanol by the reaction with _____a)Br2/waterb)Nac)Glycerold)All of the aboveCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Read the passage given below and answer the following questions:The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.Q. Phenol can be distinguished from ethanol by the reaction with _____a)Br2/waterb)Nac)Glycerold)All of the aboveCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Read the passage given below and answer the following questions:The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.Q. Phenol can be distinguished from ethanol by the reaction with _____a)Br2/waterb)Nac)Glycerold)All of the aboveCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Read the passage given below and answer the following questions:The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.Q. Phenol can be distinguished from ethanol by the reaction with _____a)Br2/waterb)Nac)Glycerold)All of the aboveCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Read the passage given below and answer the following questions:The reaction of phenol with aqueous sodium hydroxide indicates that phenols are stronger acids than alcohols and water. Due to the higher electronegativity of sp2 hybridised carbon of phenol to which –OH is attached, electron density decreases on oxygen. This increases the polarity of O–H bond and results in an increase in ionisation of phenols than that of alcohols. Now let us examine the stabilities of alkoxide and phenoxide ions. In alkoxide ion, the negative charge is localised on oxygen while in phenoxide ion, the charge is delocalised. The delocalisation of negative charge makes phenoxide ion more stable and favours the ionisation of phenol.Q. Phenol can be distinguished from ethanol by the reaction with _____a)Br2/waterb)Nac)Glycerold)All of the aboveCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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