Abstract

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

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.

Hydroxy; ethoxychalcone; oxime spectrophotometry

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