323262
Mark the correct order of decreasing acid strength of the following compounds.(I)(V)
1 V \(>\) IV \(>\) II \(>\) I \(>\) III
2 II \(>\) IV \(>\) III \(>\) I \(>\) V
3 IV \(>\) V \(>\) III \(>\) II \(>\) I
4 V \(>\) IV \(>\) III \(>\) II \(>\) I
Explanation:
Phenol acidic strength is directly proportional to -I. effect group and inversely proportional to \(+\mathrm{I}\). effect group.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323263
The correct order of \(\mathrm{pK}_{\mathrm{a}}\) values for the following compound is
1 A \(>\) B \(>\) C \(>\) D
2 B \(>\) A \(>\) D \(>\) C
3 B \(>\) D \(>\) A \(>\) C
4 C \(>\) A \(>\) D \(>\) B
Explanation:
Higher the value of \({{\text{K}}_{\text{a}}}\) or lower the value of \(\mathrm{pK}_{\mathrm{a}}\), stronger will be the acid. Presence of electron donating groups reduces acidic nature of phenol. Presence of electron withdrawing group increases the acidic strength of phenol. Thus, order of acidic strength
323262
Mark the correct order of decreasing acid strength of the following compounds.(I)(V)
1 V \(>\) IV \(>\) II \(>\) I \(>\) III
2 II \(>\) IV \(>\) III \(>\) I \(>\) V
3 IV \(>\) V \(>\) III \(>\) II \(>\) I
4 V \(>\) IV \(>\) III \(>\) II \(>\) I
Explanation:
Phenol acidic strength is directly proportional to -I. effect group and inversely proportional to \(+\mathrm{I}\). effect group.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323263
The correct order of \(\mathrm{pK}_{\mathrm{a}}\) values for the following compound is
1 A \(>\) B \(>\) C \(>\) D
2 B \(>\) A \(>\) D \(>\) C
3 B \(>\) D \(>\) A \(>\) C
4 C \(>\) A \(>\) D \(>\) B
Explanation:
Higher the value of \({{\text{K}}_{\text{a}}}\) or lower the value of \(\mathrm{pK}_{\mathrm{a}}\), stronger will be the acid. Presence of electron donating groups reduces acidic nature of phenol. Presence of electron withdrawing group increases the acidic strength of phenol. Thus, order of acidic strength
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323260
Phenol does not react with
1 Sodium bicarbonate
2 Sodium hydroxide
3 Potassium hydroxide
4 Ferric chloride
Explanation:
Phenol is weak acid than carbonic acid.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323261
Phenol is less acidic than
1 Ethanol
2 o-nitrophenol
3 o-methylphenol
4 o-methoxyphenol
Explanation:
Due to EWG nature of \(-\mathrm{NO}_{2}\).
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323262
Mark the correct order of decreasing acid strength of the following compounds.(I)(V)
1 V \(>\) IV \(>\) II \(>\) I \(>\) III
2 II \(>\) IV \(>\) III \(>\) I \(>\) V
3 IV \(>\) V \(>\) III \(>\) II \(>\) I
4 V \(>\) IV \(>\) III \(>\) II \(>\) I
Explanation:
Phenol acidic strength is directly proportional to -I. effect group and inversely proportional to \(+\mathrm{I}\). effect group.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323263
The correct order of \(\mathrm{pK}_{\mathrm{a}}\) values for the following compound is
1 A \(>\) B \(>\) C \(>\) D
2 B \(>\) A \(>\) D \(>\) C
3 B \(>\) D \(>\) A \(>\) C
4 C \(>\) A \(>\) D \(>\) B
Explanation:
Higher the value of \({{\text{K}}_{\text{a}}}\) or lower the value of \(\mathrm{pK}_{\mathrm{a}}\), stronger will be the acid. Presence of electron donating groups reduces acidic nature of phenol. Presence of electron withdrawing group increases the acidic strength of phenol. Thus, order of acidic strength
323262
Mark the correct order of decreasing acid strength of the following compounds.(I)(V)
1 V \(>\) IV \(>\) II \(>\) I \(>\) III
2 II \(>\) IV \(>\) III \(>\) I \(>\) V
3 IV \(>\) V \(>\) III \(>\) II \(>\) I
4 V \(>\) IV \(>\) III \(>\) II \(>\) I
Explanation:
Phenol acidic strength is directly proportional to -I. effect group and inversely proportional to \(+\mathrm{I}\). effect group.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323263
The correct order of \(\mathrm{pK}_{\mathrm{a}}\) values for the following compound is
1 A \(>\) B \(>\) C \(>\) D
2 B \(>\) A \(>\) D \(>\) C
3 B \(>\) D \(>\) A \(>\) C
4 C \(>\) A \(>\) D \(>\) B
Explanation:
Higher the value of \({{\text{K}}_{\text{a}}}\) or lower the value of \(\mathrm{pK}_{\mathrm{a}}\), stronger will be the acid. Presence of electron donating groups reduces acidic nature of phenol. Presence of electron withdrawing group increases the acidic strength of phenol. Thus, order of acidic strength
323262
Mark the correct order of decreasing acid strength of the following compounds.(I)(V)
1 V \(>\) IV \(>\) II \(>\) I \(>\) III
2 II \(>\) IV \(>\) III \(>\) I \(>\) V
3 IV \(>\) V \(>\) III \(>\) II \(>\) I
4 V \(>\) IV \(>\) III \(>\) II \(>\) I
Explanation:
Phenol acidic strength is directly proportional to -I. effect group and inversely proportional to \(+\mathrm{I}\). effect group.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323263
The correct order of \(\mathrm{pK}_{\mathrm{a}}\) values for the following compound is
1 A \(>\) B \(>\) C \(>\) D
2 B \(>\) A \(>\) D \(>\) C
3 B \(>\) D \(>\) A \(>\) C
4 C \(>\) A \(>\) D \(>\) B
Explanation:
Higher the value of \({{\text{K}}_{\text{a}}}\) or lower the value of \(\mathrm{pK}_{\mathrm{a}}\), stronger will be the acid. Presence of electron donating groups reduces acidic nature of phenol. Presence of electron withdrawing group increases the acidic strength of phenol. Thus, order of acidic strength
.png)
