Background Reading: McMur 20-5. sDBs IR spe as film and obtain the benzoic acid

Question

Background Reading: McMur 20-5. sDBs IR spe as film and obtain the benzoic acid as a KBr disc. Procedure: 1. Mix 2.0 mL of benzonitrile and 25 mL of 10%. NaoH 100mL round Caution caustic bottomed flask. Add boiling stones and glass jo attach a reflux condenser. Record 2. Reflux the reaction mixture for 40 Prepar minutes. Verify the evolution of benzol ammonia by holding a moist strip of betwee litmus paper over the top of the condenser. While the reaction mixture Clean is refluxing, obtain the IR spectrum of aceto benzonitrile drying next s 3. After 40 minutes pour the reaction Cauti mixture into an Erlenmeyer flask and and p cool it in an ice-water bath. Acidify the reaction mixture by adding Wher concentrated hydrochloric acid acid dropwise until the precipitation of have benzoic acid is complete. milk

Explanation / Answer

Along with acid another product of this hydrolysis is ammonia. So if ammonia is forming then we can infer that the hydrolysis is happening. Hence we test the evolution of ammonia.

If ammonia is present then the medium is basic. Basic medium turns red litmus to blue

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