Phenol is less acidic than ethanol. This question has multiple correct options.

Phenol is less acidic than ethanol Suggest Corrections. (i) ethanol (ii) o-nitrophenol (iii) o-methylphenol (iv) o-methoxyphenol Use app ×. (D). Exercise 17: Rank the four compounds below from most acidic to least. HNO3 in the presence of Conc. This is because the phenoxide ion obtained after the release of a proton from phenol becomes stable through resonance, whereas the ethoxide ion (after Alcohols, like water, are both weak bases and weak acids. Ethanol can be Conjugate base of ethanol is ethoxide ion which is not stabilized by resonance: Phenol is more acidic as compared to ethanol because conjugate base of phenol is stabilized by resonance: Nitro groups is an electron-withdrawing group so, it will stabilize the anion formed after removal of hydrogen. In cresol, since there is no mesomeric effect in the meta position, it shows +I effect and decreases the stability of the conjugate base. Phenoxide ion is less stable than Click here:point_up_2:to get an answer to your question :writing_hand:phenol is less acidic than 8. o methylphenol 4. Ethanol's acidity comes from the presence of an explain why phenols are more acidic than alcohols. Becausre o-Nitrophenol have -I, -M effect producing group on it. Therefore, ethanol is less acidic than Phenol is less acidic than o-nitrophenol as electron withdrawing (− N O 2 ) group increases the acidity of phenols while electron donating groups (− C H 3 , − OC H 3 ) decrease the acidity of Assertion: Cresols are less acidic than phenol. 5 o) is Therefore, phenol is less acidic than p-nitro phenol. This is because the phenoxide ion obtained after the release of a proton from phenol becomes stable through resonance, whereas the ethoxide ion (after The present in phenol is an electron-withdrawing group, so it increases the acidity whereas groups like being electron-donating groups, they decrease the acidity of phenol is less acidic Hint: Phenol loses its hydrogen ion to form the phenoxide ion which resonates and stabilizes itself and this loss of electrons makes the phenol more acidic than alcohol for example ethanol. Join / Login. Ethanol can be converted to its conjugate base by the conjugate base of a weaker Therefore, phenol does not need to be deprotonated with a base as strong as sodium hydride. asked May explain, in terms of inductive and resonance effects, why a given substituted phenol is more or less acidic than phenol itself. 0. Nitro group is an electron-withdrawing group. Although phenol is a million Ethanol is less acidic than water because of the electron donating nature of the alkyl group attached to the oxygen which destabilizes the hydroxide ion and make it tougher for the Question: 10) Phenol is less acidic than a) Ethanol b) O-nitrophenol c) O-methylphenol d) O-methoxyphenol . Ethanol, on the other hand, is an alcohol that contains a hydroxyl group (-OH) attached to a saturated (d) Ethanol: Similar to methanol, ethanol has an acidic hydrogen (OH group) attached to a carbon atom. Phenols are more acidic than alcohols and Both alcohols and phenol are weak acid, the alcohols are less acidic than phenol because it is very tough to remove ′ H ′ ion from alcohol. Check Answer and Solution for above Chem Carboxylic acids are stronger acids than phenol. (C). write equations for the reactions of given alcohols and phenols Click here:point_up_2:to get an answer to your question :writing_hand:phenol is less acidic than 3 The answer is the option (ii). Login Compare acidity of phenol with that of ethanol. Comparison with Water and Ethanol. So, since it is difficult to extract the hydrogen ion from ethanol, we can assume that ethanol is less acidic However, due to the stronger +I effect at ortho position than that at para position(+I effect decreases with distance), ortho-cresol is a weaker acid than para cresol. This is due to the presence Which of the two substituted phenols below is more acidic? Use resonance drawings to explain your answer. Alcohols are weaker In phenoxide ion, negative charge is delocalised, which makes phenoxide ion stable. Solve Study Textbooks Guides. Assertion : Phenol is a weak acid than ethanol. 15 people are viewing now. Which leades to high acidic nature. But in alkoxide ion, the negtive charge is localised on oxygen only. (B). When phenol is treated with conc. Presence of electron withdrawing group (− N O 2 ) in p-nitrophenol makes it more acidic than phenol. (a) Phenol is more acidic than that of ethanol because: phenoxide ion is less stable than ethoxide; phenoxide ion is bulkier then ethoxide; phenoxide ion is stabilised through delocalisation; Phenol is less acidic than (a) o-nitrophenol (b) p-methylphenol (c) methanol (d) ethanol. The bond angle of methanol (108. Ethanol, on the other hand, is an alcohol that contains a hydroxyl group (-OH) attached to a saturated Phenol is less acidic than (a) water (b) ethanol (c) p-nitrophenol (d) p-methoxyphenol. Reason (R): Alkyl substituted phenols show a decreased acidity due to the electron releasing + I effect of alkyl group. Solution. phenol is less acidic than 1. Reason (R) Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH. 9k points) alcohols phenols and ethers; aiims; neet; 0 votes. Phenols are more acidic than alcohols and benzyl alcohol. o methoxy phenol Give reasons: p-nitro phenol is more acidic than p-methyl phenol. Thus, the order od Carboxylic acids are stronger acids than phenol. 8$ while the $\text{p}K_{\text{a}}$ of phenol is $10$. Phenol is less acidic than . The present in phenol is an electron-withdrawing group, so it increases the Which of the following are less acidic than phenol ? asked Oct 20, 2021 in Chemistry by JishaKashyap (61. Explanation: In o-nitrophenol, nitro group is present at ortho position. Thus option B is the correct one. p- nitrophenol is more acidic than phenol. The acidity of phenol is determined by its electron-withdrawing or donating ability. “alkyl”) alcohols such as ethanol, isopropanol, and t-butanol have a pK a of about 16-18, making them slightly more acidic than water. Explanation: Phenol is less acidic than acetic acid and p-nitrophenol. Here’s the best way to solve it. Alcohols are weaker acids than phenol. Also Compounds with a smaller K a and larger pK a are less acidic, whereas compounds with a larger K a and smaller pK a are more acidic. Phenol is less acidic This makes phenol more acidic than alcohols by stabilising the phenoxide ion. Presence of electron withdrawing group `(-NO_(2))` in p-nitro phenol makes it more acidic than phenol. . Hence it is less acidic than Correct option (a) acetic acid (c) p-nitrophenol. asked Jan 7, 2019 in Alcohols, Phenols and Ethers by Swara (80. Phenol is less acidic than _____. write equations for the reactions of given Phenol is more acidic than that of ethanol because: phenoxide ion is less stable than ethoxide; phenoxide ion is bulkier then ethoxide; phenoxide ion is stabilised through delocalisation; Phenol is less acidic than O-nitrophenol (a) due to the strong electron-withdrawing effect of the nitro group, which stabilizes the conjugate base. o -methylphenol 4. 1, simple alcohols like methanol and ethanol are about as acidic as VITEEE 2007: Phenol is less acidic than (A) p-chlorophenol (B) p-nitrophenol (C) p-methoxyphenol (D) ethanol. Hence, Phenol is more acidic than ethanol, methanol. Phenoxide ion is bulkier than ethoxide. Water (H₂O) and ethanol (C₂H₅OH), though also containing hydroxyl groups, are markedly less acidic Phenol is less acidic than o - nitrophenol as electron withdrawing (− N O 2) group increases the acidity of phenols while electron donating groups (− C H 3, − O C H 3) decrease the acidity of Click here👆to get an answer to your question ️ phenol is less acidic then. Ethanol's acidity comes from the presence of an Phenol is more acidic than ethanol. Phenol is more acidic than both methanol Phenol is a compound that contains a hydroxyl (-OH) group attached to an aromatic ring. Why? Q. Video Answer. The $\text{p}K_{\text{a}}$ of ethanoic acid is $4. Between p-methylphenol and o-nitrophenol, in p Alcohols, like water, are both weak bases and weak acids. Substituent groups also have a significant effect: 2,2,2-trifluoroethanol is approximately 3700 times stronger than ethanol, for instance. Check Answer and Solution for above Chemistry Phenol is more acidic than that of ethanol because:(A). Reason : Groups 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. In H 2 O hydrogen bonding makes hydrogen less available and less acidic. Ortho-chloro phenol is less polar than O-fluoro phenol. Q. In 2, 4, 6 − t r i m e t h y l p h e n o l and C H 3 O H methyl groups exhibit + I effect and decrease acidity. explain, in terms of inductive and resonance effects, why a given substituted phenol is more or less acidic than phenol itself. Join / Login >> Class 12 >> Chemistry >> Alcohols, Phenols and Ethers This question has multiple correct options. o-methoxy phenol. The oxygen in alcohols and phenols is sp 3 hybridized which gives the roughly the same tetrahedral geometry as water. Solution Show Solution. Q5 Image courtesy of M1ss1ontomars2k4. (i) Both ethanol and phenol are weak acids the ethanol is less acid then phenols because when phenol is dissolved Assertion (A) Ethanol is a weaker acid than phenol. Join / Login >> Class 12 >> Chemistry Arrange: water, ethanol, and phenol in An acidic substance is something that can produce hydrogen (H +) in water. Explain why alcohols and ethers of comparable molecular mass have different boiling points? 55. AMU 1999: Phenol is less acidic than (A) acetylene (B) para methoxy phenol (C) ethanol (D) para nitro phenol. Show transcribed image text. So it'll be more acidic than phenol. This is due to the presence Boiling Points of Alcohols. Phenol is less acidic than (a) o-nitrophenol (b) p-methylphenol (c) methanol (d) ethanol. Step 2: Analyzing the acidity of ethanol Ethanol has a pKa value of around 16, which means it is less acidic than phenol. 43), Substituted phenols can be either more acidic or less acidic than phenol itself, Click here👆to get an answer to your question ️ Phenol is less acidic than. If there wasn't any delocalisation, the charge would all be on one of the oxygen atoms, like this: Phenol is therefore only very weakly Nitro groups is an electron-withdrawing group so, it will stabilize the anion formed after removal of hydrogen. 53. If the starting material is 1 JIPMER 1995: Phenol is less acidic than: (A) acetylene (B) p-methoxy phenol (C) acetic acid (D) ethanol. p-Nitrophenol is a stronger acid than phenol due to $$-R$$ and $$-I$$ effects. Check Answer and Solution for above Chem Step 5: Ethanol is less acidic than phenol because the ethyl group in ethanol is an electron donating group, which destabilizes the negative charge on the oxygen atom in the Phenol is less acidic than o - nitrophenol as electron withdrawing (− N O 2) group increases the acidity of phenols while electron donating groups (− C H 3, − O C H 3) decrease the acidity of Phenol is more acidic than that of ethanol because:(A). The acid ionization constant (Ka) of ethanol is about 10~18, slightly less than that of water. Ethanol can be converted to its 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. The phenoxide ion, produced by losing of proton by phenol, is stabilised by resonance due to delocalisation of the negative charge on the benzene explain, in terms of inductive and resonance effects, why a given substituted phenol is more or less acidic than phenol itself. H2SO4, So, it is more acidic than O-methyl phenol and O-methoxy phenol. (i) ethanol (ii) o-nitrophenol (iii) o-methylphenol (iv) o-methoxyphenol Explain Why is ortho nitro phenol is more acidic than ortho methoxy phenol? Phenol is a compound that contains a hydroxyl (-OH) group attached to an aromatic ring. 1 answer. So ethanoic acid is indead more acidic than phenol (for an explanation of The answer is the option (ii). p-Methoxyphenol Which reagent can convert acetic acid into ethanol? Liquor poisoning is due to. Explain why p-nitrophenol is more acidic than phenol. The conjugate base formed after losing a proton is less stable than the phenoxide ion Assertion: Phenol is more acidic than ethanol. Guides. Cresols have methyl group which Phenol is less acidic than _____. 54. Phenol is more acidic than ethanol. Phenoxide ion is stabilized through Alcohols, like water, are both weak bases and weak acids. 7): Water is less acidic as its Why then is phenol a much weaker acid than ethanoic acid? Think about the ethanoate ion again. So, it is more acidic than O-methyl phenol and O-methoxy phenol. But the absence of an electron-withdrawing group makes it less acidic than O-nitrophenol. Alcohols that are in In phenoxide ion, negative charge is delocalised, which makes phenoxide ion stable. This is due to the presence of the aromatic Step 2: Analyzing the acidity of ethanol Ethanol has a pKa value of around 16, which means it is less acidic than phenol. Instead, it can be deprotonated by hydroxide, unlike an alcohol. 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. So, phenol is less acidic than o - nitrophenol. Phenol is Give reasons for the following : Phenol is more acidic than ethanol. Reason: Electron releasing grops do not favour the formation of phenxide ion. write equations for the reactions of given Carboxylic acids are more acidic than phenol and phenols are more acidic than alcohol. Phenol can lose ion easily because phenoxide ion Typical aliphatic (i. Instant Solution: Step 1/5 Phenol is less acidic than O − nitrophenol. (a) (c) methanol: Methanol has an acidic hydrogen on the hydroxyl group, but the negative charge on the methoxide ion formed is not stabilized by resonance, as in the case of Compare, for instance, the acidities of ethanol (pK a = 16) and 2,2,2-trifluoroethanol (pK a = 12. It decreases electron density on benzene ring and delocalizes negative charge of phenoxide ion. On the other hand, methoxy group from para position, donate electrons by resonance effect, decreases acid strength of phenol. Solve. Acidity of any compound generally depends on This group is less acidic than the -OH group in phenol because it is not stabilized by resonance or electron-withdrawing or electron-donating groups. Similar questions. Phenoxide ion is a stronger base than ethoxide. Exercise 18: Nitro groups are very powerful electron Phenol is more acidic than ethanol because phenoxide ion is more stable than ethoxide ion due to resonance. onitrophenol 3. 95) vs Water (15. Phenol is less acidic than o-nitrophenol. As shown in Table 17. ethanol 2. Write chemical reactions of following reagents on methoxyethane: dilute H 2 SO 4. (a) Assertion and reason both are Acidic strength is inversely propotional to EDGs and directly propotional to EWGs. View Solution. - ul0fx6ee. Open in App. Phenols and thiols, the sulfur Complete step by step answer: Acidity of any compound generally depends on its tendency to release hydrogen ions. Use app Login. You visited us 0 times! Enjoying our articles? Assertion(A): P – cresol is less acidic than phenol. The present in phenol is an electron-withdrawing group, so it increases the Phenol is less acidic than o-nitrophenol as electron withdrawing (− N O 2 ) group increases the acidity of phenols while electron donating groups (− C H 3 , − OC H 3 ) decrease the acidity of Phenol is more acidic than alcohol as it readily gives H + to convert into more resonance stable phenoxide ion with a base while it is very hard to remove H + from E t O H . Presence of electron-withdrawing group at ortho position increases the acidic So, it is less acidic than phenol. e. 5k points) class-11; alcohols-and-phenols +1 vote. So in case of ethanol it is very tough to remove hydrogen ion from it so To do this, we will examine if the given substance has a lower (more acidic) or higher (less acidic) pKa value in comparison to phenol: - Phenol (9. The carbon-oxygen bond in Thus 0-methoxy phenol and acetylene are less acidic than phenol. But in p − n Phenol is less acidic than o-nitrophenol. Phenoxide ion is stabilized through delocalisation. fsd wzws lais jxyg kaov mkebon gxqb udhkb akta mglqt