The experimental potentiometric data have been used for the determination or thermodynamic dissociation constants of benzoic acid and sodium benzoate. A computer program in GW-BASIC has been used to calculate the dissociation constants pK(a) valves of these substances from experimental data The effect of temperature, solvents and solvent composition on dissociation constant pK(a) values has also been carried out. The pK(a) values are as follows: [GRAPHICS]
A W K KHANZADA ,SAEED UDDIN ,A T MUFTI ,K M BHATTI ,
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