The activity coefficients of NaBr in the system NaBr - NaAc - H_2O at 298. 15K were determined from EMF measurements at constant total ionic strengths of 0. 1, 0. 5, 1. 0, 1. 5, 2. 0, 2. 5 and 3. 0 mol/kg.

• 用电势法测定了298.；15K以及I为0