2′-Hydroxy-4′-Ethoxychalcone Oxime (Hecox) as an Analytical Reagent for Copper

J. J. Desai; P. G. Desai; A. G. Mehta

Article | Open Access

2′-Hydroxy-4′-Ethoxychalcone Oxime (Hecox) as an Analytical Reagent for Copper

J. J. Desai¹, P. G. Desai¹ and A. G. Mehta²

¹Department of Chemistry, B.K.M. Science College, Valsad - 396 001 India.

²Department of Chemistry, P.T. Sarvajanik College of Science, Surat - 395 001 India.

Download this article as:

ABSTRACT:

2,-Hydroxy-4,-ethoxychalcone oxime (HECOX) has been used for the gravimetric and spectrophotometry determination of Cup) at pH 6.0-6.5. Job's method of continuous variation and Yoe and Jones mole ratio method show metal ligand ratio in the complex to be 1:2. The molar absorptivity of the complex at 400 nm is found to be 1.8939X104 litmole'.cm'.The stability constant determined spectrophotometries!ly is found to be 4.65 x 106 and Giobs free energy change for complex formation reaction is calculated to be -9.15 K.cal/mole. The Beer's law is obeyed upto 20 ppm of Cu(ll) ion at 400 nm.

KEYWORDS:

Hydroxy; ethoxychalcone; oxime spectrophotometry