Author(s): Sangeeta Rajput, Amrata Pawaiya, R.K. Bhatnagar and M.C. Agrawal
5-Nitro salicyloylhydrazide was prepared by reaction of 5-Nitro-Methyl salicylate and Hydrazine Hydrate. The present investigation involves determination of thermodynamic ionisation constant of 5-Nitro salicyloylhydrazide in aqueous solution on which no data exist in the literature. The measurements are performed at room temperature, and at ionic strength of 0.1, 0.25 and 0.5mol. The absorption spectra of each sample were measured at different wavelengths. The results showed that the numerically calculated pKc values are identical to those graphically obtained.