Advertisements
Advertisements
Question
Answer in brief.
Explain why p-nitrophenol is a stronger acid than phenol.
Advertisements
Solution
- In ρ-nitrophenol, nitro group (NO2) is an electron-withdrawing group present at para position which enhances the acidic strength (- I effect). The O – H bond is under strain and release of proton (H+) becomes easy. Further, ρ-nitrophenol ion is more stabilised due to resonance.
- Since the absence of electron-withdrawing group (like –NO2) in phenol at ortho and para position, the acidic strength of phenol is less than that of ρ-nitrophenol.
APPEARS IN
RELATED QUESTIONS
Answer in one sentence/ word.
Write the IUPAC name of alcohol having molecular formula C4H10O which is resistant towards oxidation.
Answer in one sentence/ word.
Write the name of the electrophile used in Kolbe’s Reaction.
Write two points of difference between the properties of phenol and ethyl alcohol.
The reagents used to convert phenol to 2,4,6-tribromophenol is _____________
Write the reaction to get aspirin from salicylic acid.
With the help of chemical equations show what happens when cumene hydroperoxide is treated with dil. acid.
What is the action of following reagents on pent-3-enal?
- H2/Ni
- LiAlH4/H3O+
How will you bring about the following conversions?
2-methyl propan-2-ol to 2-methylpropene
Phenol reacts with concentrated nitric acid in the presence of cone. H2SO4 to form ____________.
Which alcohol is difficult to oxidise?
Sodium metal with ethyl alcohol gives __________ gas.
Isobutylene on hydroboration followed by oxidation with hydrogen peroxide in presence of base yields ______.
Cumene is used in the commercial method for the manufacture of ____________.
In Dow process, chlorobenzene is converted into phenol by ____________.
Which isomer of C4H10O is optically active?
Identify 'Z' in the following series of reaction:
\[\ce{Butan - 2 - ol ->[PCl3] X ->[alco. KOH] Y ->[i) H2SO4][ii) H-OH/heat] Z}\]
Identify the compound having highest boiling point from the following?
The compound which reacts fastest with Lucas reagent at room temperature is ______.
What is the product obtained in Reimer - Tiemann reaction?
The order of reactivity of hydrogen halides with ether is as follows.
What is the action of nitrous acid on aniline?
Arrange O - H, C - H and N - H bonds in increasing order of their bond polarity.
Explain the reaction of 1° and 2° alcohol with oxidising agent chromic anhydride (CrO3).
Write the chemical reaction when hot copper is treated with Vapours of 1° (primary) alcohol.
Explain: Phenols are acid while alcohol is neutral.
The C−O−C angle in ether is about ______.
What is the name of isopropyl alcohol according to the carbinol system?
