Acid-base equilibrium was investigated in dilute acidic solutions 1 to 8 M in LiCl for bases having a charge of -2, -1, 0, +1, and +2. In every instance the quantitative aspects of the equilibrium were consistent with the expression Kbhwhere Abh is the thermodynamic acid dissociation constant of the acid, BH, and QBH has a constant value for a particular base in a particular salt solution. Experimental values of log Qbh are reported for each base. The charge of the base has a large'effect on the value of Qbii. For bases of the same charge type, there are significant differences in the values of Qbh. The experimental results are well fitted by the equation log QBh = z\/µ/0 + A VaO + BM + n log aw, where z is the charge of the base, and A, B, and n are leastsquares parameters. Modifications of this equation are tested. The nature of Qbh is discussed. Experimental values of pHG.E. -pMH in slightly acidified 1 to 8 M LiCl are reported (pHG.E. is the pH measured using a cell with a glass indicator electrode and a saturated calomel electrode; pMH = -log total strong acid concentration). An equation similar to that for log QBh is shown to fit the pHGiE. -pMH data. The nature of pHG.E. -pMH is discussed.
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