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Which is stronger acid ethanol or phenol?
Phenol is stronger acid than ethanol. Phenol's acidic strength stems from the presence of the -OH group attached directly to the aromatic ring, which allows it to readily donate a proton. Ethanol, in contrast, has a less acidic -OH group due to its aliphatic structure.
What are two tests distinguish between ethanol and phenol?
The ferric chloride test: Ethanol does not react with ferric chloride, while phenol forms a purple color when mixed with ferric chloride. The bromine water test: Ethanol does not react with bromine water, while phenol decolorizes bromine water due to its reducing properties.
Why phenol is stronger acid than ethanol?
Phenol is a stronger acid than ethanol because the phenoxide ion formed after losing a proton is stabilized by resonance, making it more stable. In contrast, ethanol forms a less stable ethoxide ion due to the lack of resonance stabilization. This difference in stability influences the ease with which the acids donate a proton.
Why phenol is acidic but ethanol is neutral?
Phenol is acidic because it contains a hydroxyl group directly attached to an aromatic ring, allowing it to donate a proton. Ethanol, on the other hand, is neutral because the hydroxyl group is not as acidic due to the presence of the alkyl group, which stabilizes the molecule and makes it less likely to donate a proton.
Does absorbance increase or decrease as the solution concentration of the substance increase?
Absorbance typically increases as the solution concentration of a substance increases. This is because absorbance is directly proportional to the concentration of the absorbing species, as described by the Beer-Lambert Law. As more molecules of the substance are present in the solution, more light is absorbed, leading to higher absorbance readings.
Which is stronger acid ethanol or phenol?
Phenol is stronger acid than ethanol. Phenol's acidic strength stems from the presence of the -OH group attached directly to the aromatic ring, which allows it to readily donate a proton. Ethanol, in contrast, has a less acidic -OH group due to its aliphatic structure.
Why do high temperatures have a higher absorbance than ethanol?
High temperatures can lead to increased molecular vibrations and transitions to higher energy states, resulting in higher absorbance. Ethanol, being a relatively simple molecule, may not exhibit as strong absorption characteristics compared to more complex molecules or at higher temperatures. The combination of temperature and molecular structure can affect the absorbance of a substance.
What are two tests distinguish between ethanol and phenol?
The ferric chloride test: Ethanol does not react with ferric chloride, while phenol forms a purple color when mixed with ferric chloride. The bromine water test: Ethanol does not react with bromine water, while phenol decolorizes bromine water due to its reducing properties.
Suggest a chemical test(s) to distinguish ethanol and phenol. Include the reagents reaction conditions and observations. And the equation?
Phenol solution, or phenol directly from the manufacturer?If the phenol is in the form it comes in from the factory, no chemical test is necessary. Phenol is a white crystalline solid.If it's dissolved in water, the easiest test is pH. Phenol solution is more acidic than ethanol. So...whatever you use for a pH test will do ya.
Why phenol is stronger acid than ethanol?
Phenol is a stronger acid than ethanol because the phenoxide ion formed after losing a proton is stabilized by resonance, making it more stable. In contrast, ethanol forms a less stable ethoxide ion due to the lack of resonance stabilization. This difference in stability influences the ease with which the acids donate a proton.
Which is more polar phenol or ethanol?
Yes , phenol is more polar than toluene. because ph-OH has more dipole moment than Ph-CH3
Why phenol is more acidic than ethanol?
phenol is more acidic because of the benzene ring present in the molecule,when you lose the H form the OH group it is possible to delocalise the charge around the aromatic system due to the pi electron cloud,straight chain alcohols cannot do this so it is less favourable to deprotonate them hance it is easier to deprotonate a phenol,hence we say it is more acidic
Compare the reactivity between ethanol and phenol?
Reactivity in general between the two is quite difficult to compare since the aromatic ring of phenol is able to undergo reactions which ethanol isn't and vice versa. However, there are a number of reactions which can be compared. The first of these is deprotonation, affecting the acidity of the alcohol. Since the subsequent negative charge on the oxygen is stabilised over the benzene ring, phenol is significantly more acid than ethanol (about 100,000 times). Nuclephilic substitution with the alcohol as the nucleophile is likely to be slightly quicker using phenol due to this easier deprotonation creating a stronger nucleophile than the ethanol. Another common reaction is nucleophilic substitution with the alcohol as the electrophile, which occurs fairly easily to ethanol in the presence of an acid. Phenol however, due to its ring, cannot easily react in the same way.
Why ethanol is less acidic than phenol?
Ethanol is less acidic than phenol because the hydroxyl group in ethanol is less likely to release a proton compared to the phenol group in phenol. This is due to the presence of the aromatic ring in phenol that stabilizes the phenoxide ion formed upon deprotonation, making it more acidic than ethanol.
Why phenol is acidic but ethanol is neutral?
Phenol is acidic because it contains a hydroxyl group directly attached to an aromatic ring, allowing it to donate a proton. Ethanol, on the other hand, is neutral because the hydroxyl group is not as acidic due to the presence of the alkyl group, which stabilizes the molecule and makes it less likely to donate a proton.
If a solution is diluted will the absorbance decrease or increase?
If a solution is diluted, the absorbance will generally decrease. This is because the concentration of the absorbing species is lower in the diluted solution, resulting in fewer molecules to interact with the incident light and therefore lower absorbance.
Give four properties of phenol to show how it differ from alcohol?
1-Phenol (carbolic acid) is acidic in nature and turns blue litmus red while alcohol (ethanol) does not, 2-phenol gives violet or blue colour with neutral ferric chloride solution while alcohol does not, 3-phenol freezes to a solid in fridge while alcohol does not, 4-phenol produces bubbles on rough iron surface while alcohol does not.
