Identification of an Unknown Carbonyl By: Stacey Walker Abstract The 2,4-dinitrophenylhydrazine (2,4-DNPH) and semicarbazone derivatives of the unknown carbonyl are synthesized and their melting points are obtained. The infrared (IR) and proton nuclear magnetic resonance (NMR) and boiling range of the liquid unknown is obtained. Based on boiling point and infrared and proton nuclear magnetic resonance, the derivative is 2,4-pentanedione. Introduction In this experiment, the 2,4-dinitrohenylhydrozine (2,4-DNPH) and semicarbazone derivatives of an unknown carbonyl (#55) is synthesized. The melting range […]
