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Table 8 Comparison of mean activity coefficients predicted by using SIT with experimental values

From: Estimation of medium effects on equilibrium constants in moderate and high ionic strength solutions at elevated temperatures by using specific interaction theory (SIT): Interaction coefficients involving Cl, OH- and Ac-up to 200°C and 400 bars

System

Experimental Data Sets*

Sigma Value σ

HCl-H2O

Robinson and Harned [46]: mHCl = 0.0001–4.0, T = 0–60°C

0.0194

 

Bates and Bower [47]: mHCl = 0.001–1.0, T = 0–90°C

0.0121

 

Greeley et al. [23]: mHCl = 0.001–1.0, T = 60–200°C

0.0081

 

Roy et al. [48]: mHCl = 0.005–4.0, T = 0–45°C

0.0171

NaCl-H2O

Robinson and Harned [46]: mNaCl = 0.1–4.0, T = 0–100°C

0.0295

 

Liu and Lindsay [42]: mNaCl = 0.05–6.0, T = 75–200°C

0.0167

 

Busey et al. [49]: mNaCl = 0.1–5.0, T = 100–200°C

0.0135

HCl-MgCl2-H2O

White et al. [50]: mHCl = 0.01–0.7848, mMgCl2 = 0.0033–0.2616; T = 0–45°C

γHCl: 0.0114

HCl-BaCl2-H2O

Roy et al. [48]: mHCl = 0.0025–2.0, mBaCl2 = 0.000833–0.667; T = 0–45°C

γHCl: 0.0391 γBaCl2: 0.0180

MgCl2-H2O

Pan [51]: mMgCl2 = 0.0001–0.1, T = 25°C

0.0011

 

Goldberg and Nuttall [52]: mMgCl2 = 0.001–2.0, T = 25°C

0.0164

 

Rard and Miller [53]: mMgCl2 = 0.1––2.0, T = 25°C

0.0348

 

Wang et al. [54]: mMgCl2 = 0.001–2.0, T = 100–200°C (theoretical fit)

0.0111

 

El Guendouzi et al. [55]: mMgCl2 = 0.2–2.0, T = 25°C

0.0322

CaCl2-H2O

McLeod and Gordon [56]: mCaCl2 = 0.0016–0.0784, T = 15°C–35°C

0.0006

 

Robinson [57]: mCaCl2 = 0.1–2.2, T = 25°C

0.025

 

Stokes [58]: mCaCl2 = 0.1–3.0, T = 25°C

0.0200

 

Shedlovsky [59]: mCaCl2 = 0.001–0.1, T = 25°C

0.0039

 

Robinson and Stokes [22]: mCaCl2 = 0.1–3.0, T = 25°C

0.0200

 

Staples and Nuttall [60]: mCaCl2 = 0.001–3.0, T = 25°C

0.0145

 

Rard and Clegg [61]: mCaCl2 = 0.001–3.0, T = 25°C

0.0159

 

El Guendouzi et al. [55]: mCaCl2 = 0.2–3.0, T = 25°C

0.0205

 

Gruszkiewicz and Simonson [62]: mCaCl2 = 0.01–3.0, T = 50°C–200°C

0.0110

SrCl2-H2O

Harned and Åkerlöf [63]: mSrCl2 = 0.01–1.0, T = 25°C

0.0280

 

Phillips et al. [64]: mSrCl2 = 0.05–1.3, T = 25°C

0.0414

 

Robinson and Stokes [22]: mSrCl2 = 0.1–3.0, T = 25°C

0.0404

 

Longhi et al. [65]: mSrCl2 = 0.0001–0.3, T = 10°C–70°C

0.0109

 

Pan [51]: mSrCl2 = 0.0001–0.1, T = 25°C

0.0012

 

Goldberg and Nuttall [52]: mSrCl2 = 0.001–3.0, T = 25°C

0.0401

BaCl2-H2O

Tippetts and Newton [66]: mBaCl2 = 0.01–1.8, T = 0°C–45°C

 
 

Ardizzone et al. [67]: mBaCl2 = 0.0001–0.3, T = 10°C–70°C

 

SmCl3-H2O

Mason [68]: mSmCl3= 0.05–1.0, T = 25°C

0.0218

 

Robinson and Stokes [22]: mSmCl3= 0.1–1.0, T = 25°C

0.0334

 

Spedding et al. [69]: mSmCl3= 0.1–1.0, T = 25°C

0.0247

EuCl3-H2O

Mason [68]: mEuCl3= 0.05–1.0, T = 25°C

0.0220

 

Robinson and Stokes [22]: mEuCl3= 0.1–1.0, T = 25°C

0.0317

 

Spedding et al. [69]: mEuCl3= 0.1–1.0, T = 25°C

0.0254

GdCl3-H2O

Spedding et al. [69]: mEuCl3= 0.1–1.0, T = 25°C

0.0247

LiOH-H2O

Kangro and Groeneveld [70]: mLiOH = 0.5–2.0, T = 25°C

0.0375

 

Hamer and Wu [71]: mLiOH = 0.001–2.0, T = 25°C

0.0290

NaOH-H2O

Harned [72]: mNaOH = 0.0202–3.1, T = 25°C

0.0174

 

Harned and Åkerlöf [63]: mNaOH = 0.0053–3.1, T = 25°C

0.0274

 

Åkerlöf and Kegeles [73]: mNaOH = 0.1–5.0, T = 0–70°C

0.0382

 

Robinson and Stokes [22]: mNaOH = 0.1–5.0, T = 25°C

0.0365

 

Hamer and Wu [71]: mNaOH = 0.001–5.0, T = 25°C

0.0298

KOH-H2O

Knobel [74]: mKOH = 0.001–3.0, T = 25°C

0.0178

 

Scatchard [75]: mKOH = 0.001–1.0, T = 25°C

0.0209

 

Harned and Åkerlöf [63]: mKOH = 0.01–1.0, T = 25°C

0.0201

 

Harned and Cook [76]: mKOH = 0.1–4.0, T = 0°C–35°C

0.0345

 

Robinson and Harned [46]: mKOH = 0.05–4.0, T = 25°C

0.0207

 

Robinson and Stokes [22]: mKOH = 0.1–5.0, T = 25°C

0.0422

 

Hamer and Wu [71]: mKOH = 0.001–5.0, T = 25°C

0.0377

CsOH-H2O

Harned and Schupp [77]: mCsOH = 0.01016–1.3205, T = 25°C

0.0129

 

Robinson and Stokes [78]: mCsOH = 0.1–1.0, T = 25°C

0.0171

 

Robinson and Stokes [22]: mCsOH = 0.1–1.0, T = 25°C

0.0083

 

Hamer and Wu [71]: mCsOH = 0.001–1.2, T = 25°C

0.0086

  1. * Multiple experimental data sets in the same system are listed in chronological order.