Salicylic acid + acetic anhydride react to form acetylsalicylic acid (aspirin) + acetic acid.
This reaction is performed in acidic conditions ( normally by adding sulfuric acid) and is heated.
The balanced equation for the reaction between salicylic acid and acetic anhydride to form aspirin (acetylsalicylic acid) is: salicylic acid + acetic anhydride → aspirin + acetic acid.
The reaction between salicylic acid and acetic anhydride involves the substitution of a hydroxyl group in salicylic acid with an acetyl group from acetic anhydride. This reaction is catalyzed by an acid, typically sulfuric acid, and results in the formation of aspirin and acetic acid as byproducts.
37.16% is the expected yield in the reaction of salicylic acid and acetic anhydride used to form aspirin.
The ingredients needed to produce aspirin are salicylic acid and acetic anhydride. Acetic acid is also produced as a byproduct during the chemical reaction.
The main impurties are probably the unreacted reactants. i.e salicylic acid and some acetic anhydride (ethanoic anhydride)
The chemical reaction between acetic anhydride and salicylic acid is called esterification. This reaction forms acetylsalicylic acid, which is commonly known as aspirin.
Aspirin is formed in a reaction between salicylic acid and acetic anhydride. In this reaction it is the phenolic alcohol group that reacts to form the aspirin.
Aspirin is generally produced by the following mechanism (starting from basic materials) Phenol --(NaOH, CO2, heat)--> Sodium Salicylate (+para isomer) --(H2SO4)--> Salicylic acid --(acetic anhydride)--> acetylsalicylic acid (Aspirin) Due to the myriad of organic reactions, there are multiple possibilities at each stage. However, the above is the most efficient and common way of synthesizing Aspirin. For example, the last reaction (esterification) may be accomplished by using an acyl halide instead of an anhydride (e.g. ethanoyl/acetic chloride instead of acetic anhydride). However, the acyl halide is more costly to synthesize and more unstable to handle.
Your question has the names right in it. Maybe it's the chemical formulas you want. In that case, salicylic acid is C7H6O3 and acetic anhydride is C4H6O3.
Aspirin is made when salicylic acid and acetic anhydride is reacted in the presence of an acid catalyst such as H2SO4. Acetylsalicylic acid (aspirin) and acetic acid is formed. The reaction is an esterification reaction.
acetic an hydride formula is (CH3CO)2O in salicylic acid for benzene ring OH and COOH are present ortho to each other. When we terate the acetic an hydride with salicylic acid, Hydrogen as a positive charge from slicylic acid (from OH not from COOH) and CH3COO as a negetive chare will replaces and finally acetyl salicylicylic acid will form,it is also called as ASpirin.acetic acid is also forms
A reaction between an alcohol and an anhydrid is usually exothermic, so I would say it is.