Advertisements
Advertisements
प्रश्न
Answer in brief.
Explain why p-nitrophenol is a stronger acid than phenol.
Advertisements
उत्तर
- 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
संबंधित प्रश्न
Answer in one sentence/ word.
Write the name of the electrophile used in Kolbe’s Reaction.
Answer in brief.
Explain why phenol is more acidic than ethyl alcohol.
Answer in brief.
Give the reagents and conditions necessary to prepare phenol from Benzene sulfonic acid.
Write chemical reactions to convert phenol into salicyaldehyde. Write the name of the reaction. What happens when if CCl4 is used instead of CHCl3 in the above reaction.
Which alcohol is difficult to oxidise?
Which of the following compounds does not react with bromine in alkaline medium?
In phenols, −OH group is attached to ___________ hybridised carbon.
The number of isomeric alcohols possible with the formula C4H10O is ____________.
Cumene is used in the commercial method for the manufacture of ____________.
What is the product of the following reaction?
\[\ce{CH3 - CH2 - CH2 - OH ->[conc. H2SO4][\Delta]}\]
Identify 'A' and 'B' in the following series of reactions.
+I effect of alkyl groups in alcohols increases the stability of ____________.
____________ will NOT undergo acetylation.
Which of the following is INCORRECT regarding phenol?
The number of moles of hydrogen gas formed when 2 moles of 2-methylpropan-2-ol reacts with aluminium is ____________.
Identify the product B in following conversion.
\[\ce{Chlorobenzene + H2O ->[Cu, 673 K][Pressure] A ->[conc. H2SO4][373 K] B}\]
Which following reagent is used to obtain alkene from alcohol?
Which among the following compounds is used to prepare solid fuel using calcium acetate?
Which of the following alcohols is least soluble in water?
Identify product B in the following conversion?
\[\ce{Phenol ->[NaOH] A ->[CH3I] B}\]
Identify the role of PDC from the following.
Which of the following compounds has lowest boiling point?
The major product obtained in the following reaction is
Explain the reaction of 1° and 2° alcohol with oxidising agent chromic anhydride (CrO3).
The C−O−C angle in ether is about ______.
Which of the following is primary benzylic alcohol?
