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The current study aimed to use silver ion (Ag+) complexes with pyrazole based ligands for developing spectroscopic method of silver ion in its aqueous solution with high sensitivity and low detection limits. The stability and composition of the complexes of 1, 3-bis (3-(2-pyridyl) pyrazol-1-ylmethyl) benzene (1, 3-PPB) and 1, 4-bis (3-(2-pyridyl) pyrazol-1-ylmethyl) benzene (1, 4-PPB) with Ag (I) ion have been investigated applying the spectrophotometric method in mixed (1: 1) solvent of ethanol and water. Various experimental parameters, which include pH, ionic strength, solvent composition, and time, have been studied. The stoichiometry and formation constant of each complex have been evaluated spectrophotometrically. Spectrophotometric results indicated the formation of 1: 1 complexes with stability order of Ag-1, 4-PPB> Ag-1, 3-PPB. Molar absorptivity values of the complexes have also been determined and were found to be 5039 and 6320, for Ag-1, 3-PPB and Ag-1, 4-PPB, respectively. The sensitivities for Ag determination by complexation with 1, 3-PPB and 1, 4-PPB were evaluated and found to be 0.045 and 0.055 mg. l-1, respectively. The Ag-PPB complexes could be used for Ag+ determination in aqueous solutions with high sensitivity and low detection limits.