Phenol On Treatment With Conc HNO3 Gives A Picric Acid ... - Vedantu

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AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsPhenol on treatment with conc. $HN{{O}_{3}}$ gives:(A) Picric acid(B) Ortho and meta-nitrophenols(C) Ortho and para-nitrophenols(D) None of the aboveAnswerVerified522.1k+ viewsHint: Find out which reaction takes place when conc. $HN{{O}_{3}}$ reacts with phenol. Phenol is an aromatic alcohol so think which type of reaction phenol will undergo easily. Take a look at the question carefully and think what will happen if dilute reagent is used instead of concentrated one and then select the correct answer.Complete step by step solution:- Phenol is an aromatic alcohol. We know aromatic compounds easily give electrophilic substitution reactions.- Electrophilic substitution reactions are the reactions in which an electrophile replaces a functional group generally a proton from the reactant.- conc. $HN{{O}_{3}}$ is concentrated nitric acid. It is a nitrating reagent.- Phenol will undergo nitration reaction in the presence of conc. nitric acid, $HN{{O}_{3}}$ to give 2, 4, 6-trinitrophenol which is also known as picric acid. - Phenol will undergo nitration in presence of nitric acid also but will form either mono- or di-substituted ortho- or para-nitrophenols. - Phenols are nucleophilic in nature and hence undergo electrophilic substitution reactions like nitration, sulphonation, alkylation, acetylation and halogenation.- Therefore, phenol on treatment with conc. $HN{{O}_{3}}$ gives picric acid.- Therefore, the answer is option (A).Note: Remember phenols are nucleophilic in nature and easily give electrophilic substitution reactions. If phenol is treated with concentrated nitric acid then picric acid is formed. If phenol is treated with dilute nitric acid, mono or disubstituted nitrophenols are formed. o-nitrophenols are more stable than p-nitrophenols due to intramolecular hydrogen bonding.Recently Updated PagesMaster Class 9 General Knowledge: Engaging Questions & Answers for SuccessMaster Class 9 Social Science: Engaging Questions & Answers for SuccessMaster Class 9 English: Engaging Questions & Answers for SuccessMaster Class 9 Maths: Engaging Questions & Answers for SuccessMaster Class 9 Science: Engaging Questions & Answers for SuccessClass 9 Question and Answer - Your Ultimate Solutions GuideMaster Class 9 General Knowledge: Engaging Questions & Answers for SuccessMaster Class 9 Social Science: Engaging Questions & Answers for SuccessMaster Class 9 English: Engaging Questions & Answers for SuccessMaster Class 9 Maths: Engaging Questions & Answers for SuccessMaster Class 9 Science: Engaging Questions & Answers for SuccessClass 9 Question and Answer - Your Ultimate Solutions Guide

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