2 MARKS QUESTION 1) What are phenols? Give any three methods of preparation of phenol. Write a note on acidity of phenol. 2) What are phenols? Explain the reactions of phenol. Discuss the effect of substituent’s on acidity of phenol. 3) What are phenols? Give physical properties of it. 4) Give structure and uses of … Read more
Aromatic carboxylic acids, such as benzoic acid, are stronger acids compared to aliphatic carboxylic acids like acetic acid. This is because benzoic acid has a pKa value of 4.2, which is slightly lower than that of acetic acid (pKa= 4.8). The carboxylic group in benzoic acid is attached to an sp2 hybridized carbon atom, which … Read more
Aromatic acids (Carboxylic acids) undergo a variety of chemical reactions due to the presence of the carboxyl group (-COOH) in their structure. Some of the key reactions of carboxylic acids include: 1. Salt formation: When benzoic acid comes into contact with sodium hydroxide or sodium carbonate, it reacts to produce sodium benzoate. 2. Esterification of … Read more
Aromatic acids are a class of organic compounds characterized by having a carboxylic acid functional group (-COOH) attached to an aromatic ring structure. The presence of the carboxylic acid group gives aromatic acids their characteristic acidic properties. Common examples of aromatic acids include benzoic acid, salicylic acid, and cinnamic acid. Physical properties of aromatic acids … Read more
Carboxylic acids can be prepared through various methods, including: 1. Oxidation of Primary Alcohols or Aldehydes: Primary alcohols can be oxidized to carboxylic acids using oxidizing agents such as potassium permanganate (KMnO4) or chromium trioxide (CrO3) in acidic or alkaline conditions. Aldehydes can also be oxidized to carboxylic acids under similar conditions. 2. Oxidation of … Read more
Aromatic acids are compounds where one or more carboxyl groups (-COOH) are attached to the aromatic ring. They are named by the common system as derivatives of parent benzoic acid. Aromatic carboxylic acids are of two types. i. Those in which the carboxyl group is attached directly to the aromatic nucleus. ii. Those in which … Read more
Aryl diazonium salts are prepared by reacting an aromatic primary amine with nitrous acid at a temperature between 0-5 oC. Diazonium salts are very useful intermediates in the synthesis of a number of aromatic compounds. Some of them are as follows. 1. Replacement of Hydrogen: Synthesis of 1,3,5,-tribromobenzene 2. Replacement by halogen atom: Synthesis … Read more
The basicity of aromatic amines depends on the position and nature of the substituent on the benzene ring. The net effect of the electron density of nitrogen is determined by the ortho and para positions (not the meta position) of the group. The inductive effect (-I or +I) or resonance effect (-R or +R) of … Read more
Aromatic amines exhibit basicity due to the presence of the amino group (-NH2) attached to the benzene ring. This amino group can accept a proton (H⁺) to form an ammonium ion (NH3+). Bing is basic in nature; they react with acid to form salt. In aliphatic amines, the non-bonding electron pair of nitrogen is localized … Read more
Aromatic amines, which contain amino (-NH2) groups attached to a benzene ring, exhibit various chemical properties. Here are some key chemical properties of aromatic amines: 1. Formation of amides: When aromatic amines react with acyl chloride, they produce benzylamide with the formation of amide linkage. 2. Formation of salt: When an aromatic amine is treated … Read more
