Least-Squares Analysis of Osmotic Coefficient Data at 25 .degree.C According to Pitzer's Equation. 1. 1:1 Electrolytes

1995 ◽  
Vol 40 (5) ◽  
pp. 1041-1052 ◽  
Author(s):  
Simon L. Marshall ◽  
Peter M. May ◽  
Glenn T. Hefter
Keyword(s):  
Least Squares ◽  
Osmotic Coefficient ◽  
Pitzer’S Equation ◽  
Pitzer's Equation

scholarly journals Study on Solution Enthalpies of Ionic Liquids [Cnmim][H2PO4] (n= 3, 4, 5, 6) by Using Pitzer's Equation

2018 ◽  
Vol 34 (8) ◽  
pp. 933-937
Author(s):  
Zhinan HU ◽  
◽  
Jiantao ZUO ◽  
Meichen XIA ◽  
Dawei FANG ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Pitzer’S Equation ◽  
Pitzer's Equation

Osmotic and activity coefficients of sodium sulphate in water from 50 to 150 °C

1981 ◽  
Vol 59 (1) ◽  
pp. 123-126 ◽  
Author(s):  
Om. N. Bhatnagar ◽  
Alan N. Campbell
Keyword(s):  
Activity Coefficients ◽  
Osmotic Coefficients ◽  
Sodium Sulphate ◽  
Differential Manometer ◽  
Solvent Interactions ◽  
Pitzer’S Equation ◽  
Pitzer's Equation ◽  
Pressure Lowering ◽  
Different Temperatures ◽  
The Mean

The vapour pressure lowering, ΔP, of sodium sulphate solutions in water was measured in the concentration range 0.4 to 1.8 m and the temperature range 50 to 150 °C by the use of a differential manometer. ΔP values were used to calculate the osmotic coefficient of sodium sulphate solutions. Pitzer's equation for osmotic coefficients was used to evaluate βMX(0), βMX(1), and [Formula: see text] at each temperature. An attempt has been made to explain the changes in these constants in terms of the ion–ion and ion–solvent interactions. Using these constants, the mean activity coefficients, γ±, of sodium sulphate were calculated at different temperatures and concentrations using Pitzer's equation.

Studies on the relationship between Pitzer’s equation and medium effect: the system of HCl+H2SO4 in {0.06455C2H5OH+0.93545H2O}

2004 ◽  
Vol 36 (3) ◽  
pp. 253-257 ◽  
Author(s):  
Xing-Mei Lu ◽  
Wei-Guo Xu ◽  
Xiao-Hong Chang ◽  
Dian-zhen Lu ◽  
Jia-zhen Yang
Keyword(s):  
Medium Effect ◽  
Pitzer’S Equation ◽  
Pitzer's Equation ◽  
The Relationship

Heteroscedastic Methods for Performing All Pairwise Comparisons of Regression Lines Associated With J Independent Groups

Methodology ◽  
2015 ◽  
Vol 11 (3) ◽  
pp. 110-115 ◽  
Author(s):  
Rand R. Wilcox ◽  
Jinxia Ma
Keyword(s):  
Least Squares ◽  
Pairwise Comparisons ◽  
Simple Extension ◽  
Type I ◽  
Type I Errors ◽  
Well Elderly ◽  
Using Data

Abstract. The paper compares methods that allow both within group and between group heteroscedasticity when performing all pairwise comparisons of the least squares lines associated with J independent groups. The methods are based on simple extension of results derived by Johansen (1980) and Welch (1938) in conjunction with the HC3 and HC4 estimators. The probability of one or more Type I errors is controlled using the improvement on the Bonferroni method derived by Hochberg (1988) . Results are illustrated using data from the Well Elderly 2 study, which motivated this paper.

An fMRI study examining spatial navigation through a virtual environment: Partial least squares analysis

2005 ◽  
Author(s):  
Richard Mraz ◽  
Nancy J. Lobaugh ◽  
Genevieve Quintin ◽  
Konstantine K. Kakzanis ◽  
Simon J. Graham
Keyword(s):  
Least Squares ◽  
Virtual Environment ◽  
Partial Least Squares ◽  
Spatial Navigation ◽  
Partial Least Squares Analysis ◽  
Fmri Study

‘Least squares’ method—theorem or law?

1980 ◽  
Vol 59 (9) ◽  
pp. 8
Author(s):  
D.E. Turnbull
Keyword(s):  
Least Squares ◽  
Least Squares Method
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