Extraction and Spectrophotometric Determination of Cerium(IV) with N-p-Chlorophenylcinnamohydroxamic Acid

N-p-Chlorophenylcinnamohydroxamic acid reacts with cerium( IV) to form an orange coloured complex, quantitatively extractable into chloroform from alkaline medium. On the basis of this sensitive colour reaction, a new method for the extraction and spectrophotometric determination of cerium(IV) has been developed. The effects of foreign ions and sever al experimental variables on the extraction and determination of cerium(IV) have been studied and the method has been found to be simple, precise, selective, and free from the rigid control of experimental variables. The composition of the complex has been determined and the method has been found to be comparable with other methods for the determination of cerium