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ACTIVITY COEFFICIENTS OF ACIDS, BASES, AND SALTS

Petr Vanýsek

This table gives mean activity coefficients γ at 25 °C for molalities in the range of 0.1 to 1.0 mol/kg. See the following table “Mean Activity Coefficients of Electrolytes as a Function of Concentration” in this section for definitions, references, and data over a wider concentration range. Compounds are listed alphabetically by molecular formula.

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Activity Coefficients of Acids, Bases, and Salts at 25 °C as a Function of Concentration (in Molality)

Mol. form.	Name	CAS Reg. No.	Mol. wt.	γ(0.1 m)	γ(0.2 m)	γ(0.3 m)	γ(0.4 m)	γ(0.5 m)	γ(0.6 m)	γ(0.7 m)	γ(0.8 m)	γ(0.9 m)	γ(1.0 m)
Continued on next page...
AgNO₃	Silver(I) nitrate	7761-88-8	169.873	0.734	0.657	0.606	0.567	0.536	0.509	0.485	0.464	0.446	0.429
AlCl₃	Aluminum chloride	7446-70-0	133.341	0.337	0.305	0.302	0.313	0.331	0.356	0.388	0.429	0.479	0.539
Al₂(SO₄)₃	Aluminum sulfate	10043-01-3	342.151	0.035	0.0225	0.0176	0.0153	0.0143	0.014	0.0142	0.0149	0.0159	0.0175
BaCl₂	Barium chloride	10361-37-2	208.233	0.500	0.444	0.419	0.405	0.397	0.391	0.391	0.391	0.392	0.395
BeSO₄	Beryllium sulfate	13510-49-1	105.075	0.150	0.109	0.0885	0.0769	0.0692	0.0639	0.0600	0.0570	0.0546	0.0530
CaCl₂	Calcium chloride	10043-52-4	110.984	0.518	0.472	0.455	0.448	0.448	0.453	0.460	0.470	0.484	0.500
CdCl₂	Cadmium chloride	10108-64-2	183.317	0.2280	0.1638	0.1329	0.1139	0.1006	0.0905	0.0827	0.0765	0.0713	0.0669
Cd(NO₃)₂	Cadmium nitrate	10325-94-7	236.420	0.513	0.464	0.442	0.430	0.425	0.423	0.423	0.425	0.428	0.433
CdSO₄	Cadmium sulfate	10124-36-4	208.474	0.150	0.103	0.0822	0.0699	0.0615	0.0553	0.0505	0.0468	0.0438	0.0415
CoCl₂	Cobalt(II) chloride	7646-79-9	129.839	0.522	0.479	0.463	0.459	0.462	0.470	0.479	0.492	0.511	0.531
CrCl₃	Chromium(III) chloride	10025-73-7	158.355	0.331	0.298	0.294	0.300	0.314	0.335	0.362	0.397	0.436	0.481
Cr(NO₃)₃	Chromium(III) nitrate	13548-38-4	238.011	0.319	0.285	0.279	0.281	0.291	0.304	0.322	0.344	0.371	0.401
Cr₂(SO₄)₃	Chromium(III) sulfate	10101-53-8	392.180	0.0458	0.0300	0.0238	0.0207	0.0190	0.0182	0.0181	0.0185	0.0194	0.0208
CsBr	Cesium bromide	7787-69-1	212.809	0.754	0.694	0.654	0.626	0.603	0.586	0.571	0.558	0.547	0.538
CsC₂H₃O₂	Cesium acetate	3396-11-0	191.949	0.799	0.771	0.761	0.759	0.762	0.768	0.776	0.783	0.792	0.802
CsCl	Cesium chloride	7647-17-8	168.358	0.756	0.694	0.656	0.628	0.606	0.589	0.575	0.563	0.553	0.544
CsI	Cesium iodide	7789-17-5	259.809	0.754	0.692	0.651	0.621	0.599	0.581	0.567	0.554	0.543	0.533
CsNO₃	Cesium nitrate	7789-18-6	194.910	0.733	0.655	0.602	0.561	0.528	0.501	0.478	0.458	0.439	0.422
CsOH	Cesium hydroxide	21351-79-1	149.912	0.795	0.761	0.744	0.739	0.739	0.742	0.748	0.754	0.762	0.771

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ACTIVITY COEFFICIENTS OF ACIDS, BASES, AND SALTS

Activity Coefficients of Acids, Bases, and Salts at 25 °C as a Function of Concentration (in Molality)

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