Thermodynamics of the HSO4– Formation in Aqueous Solutions up to 473 K and 975 bar
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Abstract The equilibrium constant, partial molal volume, entropy and enthalpy of the formation of HSO4- ion in aqueous solutions have been determined up to 473 K and 975 bar at the ionic strengths 1 = 0 as well as in NaCl solutions having I = 1, 0.5 and 0.1 mol kg-1 At 473 K, for instance, the thermodynamic formation constant K0 decreases by ≈ 0.75 log units from saturation pressure to 975 bar. The corresponding decrease of the apparent formation constant Q at I = 1 m is ≈ 0.6 log units. The increased dissociation at higher pressure leads to a decrease of the partial molal volume and entropy due to the resulting higher electrostriction in the system.
Partial molal volumes of polymers in aqueous solutions from partial molal volume group contributions
1980 ◽
Vol 18
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pp. 121-126
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1949 ◽
Vol 71
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pp. 3336-3337
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1976 ◽
Vol 21
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pp. 33-35
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2017 ◽
Vol 5
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pp. 160-167
1999 ◽
Vol 14
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pp. 4111-4118
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