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प्रश्न
Write two points of difference between the properties of phenol and ethyl alcohol.
Write four points of difference between the properties of phenol and ethyl alcohol.
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उत्तर
| Phenol | Ethyl alcohol | |
| i. | Phenol is a low melting solid. | Ethyl alcohol is liquid. |
| ii. | The aqueous solution of phenol turns blue litmus to red, i.e., phenol is weakly acidic. | The aqueous solution of ethyl alcohol is neutral to litmus, i.e, ethyl alcohol is neutral. |
| iii. | Phenol reacts with aqueous NaOH to form sodium phenoxide. | Ethyl alcohol does not react with aqueous NaOH. |
| iv. |
Phenol reacts with neutral ferric chloride solution to give deep purple colouration of ferric phenoxide. |
Ethyl alcohol does not react with neutral ferric chloride. |
संबंधित प्रश्न
Answer in brief.
Explain why phenol is more acidic than ethyl alcohol.
Answer in brief.
Give the equations of the reactions for the preparation of phenol from isopropyl benezene.
Oxidation of ethyl alcohol using K2Cr2O7/dil H2SO4 leads to formation of _______________
When vapours of tert.butyl alcohol are passed over hot copper, it gives _____________
Write the name of major product when anisole reacts HI at 398 K
Name the reagents used to convert phenol into
- picric acid
- p-benzoquinone
Write chemical equation of acetyl chloride with phenol
An unknown alcohol is treated with Lucas reagent. Explain how you will determine whether the alcohol is primary, secondary or tertiary. Indicate by chemical equation the reaction between isopropyl alcohol and Lucas reagent.
Phenol reacts with concentrated nitric acid in the presence of cone. H2SO4 to form ____________.
α-butylene when subjected to hydroboration oxidation reaction, yields ______.
Isobutylene on hydroboration followed by oxidation with hydrogen peroxide in presence of base yields ______.
The number of isomeric alcohols possible with the formula C4H10O is ____________.
Cumene is used in the commercial method for the manufacture of ____________.
Identify 'A' and 'B' in the following series of reactions.
____________ will NOT undergo acetylation.
Identify reagents X, Y and Z.
Which following reagent is used to obtain alkene from alcohol?
The number of σ bonds in carbolic acid is ______.
Which among the following is allylic secondary alcohol?
Which of the following compounds does NOT react with sodium metal?
Identify the product X in the following reaction.
\[\ce{Phenol ->[Na2Cr2O7][H2SO4] X}\]
Ethyl alcohol can be prepared from a Grignard reagent by the reaction of ______.
Which among the following phenolic compound is most acidic in nature?
Product (B) in this reaction is:
What is the product formed when aniline is treated with \[\ce{NaNO2 + HCl}\] previous to hydrolysis?
Explain the reaction of 1° and 2° alcohol with oxidising agent chromic anhydride (CrO3).
Explain: Phenols are acid while alcohol is neutral.
The structure of A in the given reaction is:
