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Why phenoxide ion is more reactive than phenol toward electrophilic subsititution reaction?
The phenoxide ion is more reactive than phenol towards electrophilic substitution reactions because the phenoxide ion is a stronger nucleophile due to the negative charge on oxygen. This makes it more effective in attacking electrophiles in substitution reactions. Additionally, the negative charge on the phenoxide ion stabilizes the transition state, lowering the activation energy for the reaction to occur.
Is it true that phenol's conjugated base is resonance structure?
Yes, the conjugate base of phenol, phenoxide ion (C6H5O-), exhibits resonance stabilization due to delocalization of the negative charge across the aromatic ring. This resonant hybrid structure contributes to the stability of the phenoxide ion.
What is the reactions of hexanol and phenol with 2 M Na OH?
Hexanol will undergo deprotonation to form the corresponding alkoxide ion and water. Phenol will deprotonate to form the phenoxide ion and water when reacted with 2 M NaOH.
Why phenol is more stable in sodium hydroxide than in water?
Phenol is more stable in sodium hydroxide than in water because in a basic solution, the phenoxide ion is formed which delocalizes the negative charge onto the oxygen atom, making the molecule more stable. This delocalization is not as effective in water, where the negative charge is localized on the oxygen atom.
Which ion is responsible for the colour that has observed in the copper2 solution?
sulphate
Why phenoxide ion is more reactive than phenol toward electrophilic subsititution reaction?
The phenoxide ion is more reactive than phenol towards electrophilic substitution reactions because the phenoxide ion is a stronger nucleophile due to the negative charge on oxygen. This makes it more effective in attacking electrophiles in substitution reactions. Additionally, the negative charge on the phenoxide ion stabilizes the transition state, lowering the activation energy for the reaction to occur.
Which one is more soluble in water phenol or sodium phenoxide ion?
Sodium phenoxide ion is more soluble in water than phenol. This is because sodium phenoxide ion is an ionic compound, which dissociates into ions in water and forms interactions with water molecules, increasing its solubility compared to the non-ionic phenol molecule.
What ion is produced when phenol acts as an acid?
When phenol acts as an acid, it donates a proton (H+ ion) to form the phenolate ion (C6H5O-).
Why phenols are more acidic than alcohols but less than carboxylic acids?
Phenols are more acidic than alcohols due to the resonance stabilization of the phenoxide ion formed upon deprotonation. This stability lowers the energy of the phenoxide ion, making it easier for phenols to donate a proton. However, carboxylic acids are more acidic than phenols because the carboxylate ion is stabilized by two electronegative oxygen atoms and resonance delocalization, resulting in further stabilization compared to the phenoxide ion.
What is phenoxide?
Phenoxide is the conjugate base of phenol, a type of benzene ring with an -OH group attached. It is an aromatic compound that can exhibit resonance stabilization due to delocalization of electrons within the benzene ring. Phenoxide is commonly seen in organic chemistry reactions as both a nucleophile and a base.
Is it true that phenol's conjugated base is resonance structure?
Yes, the conjugate base of phenol, phenoxide ion (C6H5O-), exhibits resonance stabilization due to delocalization of the negative charge across the aromatic ring. This resonant hybrid structure contributes to the stability of the phenoxide ion.
What happens when phenol is warmed with CCl4 in aqueous NaOH?
In the presence of aqueous NaOH, phenol undergoes nucleophilic aromatic substitution reaction to form sodium phenoxide. When CCl4 is added, no reaction occurs as CCl4 is non-reactive towards phenoxide ion.
Why ethoxide ion is more unstable than phenoxide ion?
The ethoxide ion is a thousands times MORE stable than the phenoxide ion. This is because the carbonyl oxygen atom is very electronegative and pulls the electron in the double bond towards it creating a polar bond between C=O and the electron cloud consequently shifts to the O atom in the double bond. The shift creates a resonance structure which delocalises the charge between the 3 atoms (the electron cloud now moves from one O atom to the nextthrough the overlapping pi-bonds). This Cloud shift weakens the O-H bond, making it easier for the H atom to ionise and delocalises the electrons making the structure more stable.
What is the colour of chloride ion?
Chloride ion is colorless.
Is there any noticeable correlation between the metal ion radius and the colour or lack of colour of the ion in solution?
no
Why are phenols acidic in nature?
Phenol can act as an acid due to it's stability as phenoxide ion. By releasing H+ ion it will form stable C6H5O- ion. The groups having +I, -I , +M , -M efffects present on phenol will effect acidic nature of phenol. As +I or +M groups which are present at ortho and at para psitions will decrease the acidic character of phenol. If they are at meta position effect is less than at para or ortho positions.Similar to this -I or -M gorups are substituted on phenol they will increase the acidic nature. so, we can say that as the stability of phenoxide ion increases acidic nature of phenol also increases.Phenol can act as an acid due to it's stability as phenoxide ion. By releasing H+ ion it will form stable C6H5O- ion. The groups having +I, -I , +M , -M efffects present on phenol will effect acidic nature of phenol. As +I or +M groups which are present at ortho and at para psitions will decrease the acidic character of phenol. If they are at meta position effect is less than at para or ortho positions.Similar to this -I or -M gorups are substituted on phenol they will increase the acidic nature. so, we can say that as the stability of phenoxide ion increases acidic nature of phenol also increases.Phenol is a weak acid because of the presence of the hydrogen ions.
What is colour of chromate ion?
The color of chromate ion is yellow.
