Salicylic acid is considered to be a phenolic (aromatic) acid. The -OH group in salicylic acid gives a few tests of alcohols also like esterification, reaction with Na, etc.
why does salicylic acid give a positive test with FeCl3
HOC6H4COOH + NaOH = HOC6H4COONa + H2O
Bismuth Subsalicylate reacts with Hydrochloric acid to form Bismuth Oxychloride and Salicyclic acid C7H5BiO4 + HCL -------> BiOCl + C7H6O3
The citric acid doesn't contain alcohol.
Acid
salicyclic acid lauric acid palmitic acid oleic acid stearic acid
O-hydroxy benzoic acid or 2-hydroxy benzoic acid.
why does salicylic acid give a positive test with FeCl3
HOC6H4COOH + NaOH = HOC6H4COONa + H2O
Hcl cl- is a strong nucleophile capible of substituting the oH group of the salicyclic acid,, my best guess
Bismuth Subsalicylate reacts with Hydrochloric acid to form Bismuth Oxychloride and Salicyclic acid C7H5BiO4 + HCL -------> BiOCl + C7H6O3
The two major ingredients in most over the counter acne medications are salicyclic acid and benzoyl peroxide. Lime juice is acidic and has been used as a substitute for salicyclic acid. Green tea is also very purifying. Orange peel has been used and is even included in many acne products today.
An alcohol and a carboxylic acid salt (carboxylic acid if protonated at end of reaction).
Because aspirin does not contain OH group like salicyclic acid so ferric chloride preferes to react with a compounds that have OH group.
Acid
The salt of an alcohol and an acid is an ester.
The citric acid doesn't contain alcohol.