Handout4-ActivityCoef

Handout4-ActivityCoef - CEM 834 ACTIVITY COEFFICIENTS FALL...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: CEM 834 ACTIVITY COEFFICIENTS FALL 2005 TABLE I: Equations for the calculation of mean activity coefficients. EQUATION I REFERENCE COMMENTS- = +- log A Z Z I < 0.01 Debye and Hckel [1] a, b- = + +- log A Z Z I 1 B I < 0.1 Debye and Hckel [1] a, b, c- = + + +- log A Z Z I 1 B I CI up to a few molar Hckel [2] a, b, c, d- = + +- log A Z Z I 1 I < 0.1 Gntelberg [3] a, b- = + + +- log A Z Z I 1 I CI < 0.5 Guggenheim [4] a, b, d- = +- +- log A Z Z I 1 I I 0 2 . < 0.2 Davies [5, 6] a, b- = + +- log A Z Z I 1 1.5 I < 0.2 Scatchard [7] a, b- = + + + +- log A Z Z I 1 I CI DI 3/2 < 0.2 Datta and Grzybowski [8] a, b, d ( 29 ( 29 ( 29 [ ] [ ]- = + + + + +- +-- + +- log A Z Z I 1 1.2 I 0.72log 1 1.2 I C D 1 1 2 I 2I exp 2 I / I m Em 2 Pitzer [9] a, b, d 2 COMMENTS: a is the geometric mean of the thermodynamically indeterminate individual ionic...
View Full Document

Page1 / 5

Handout4-ActivityCoef - CEM 834 ACTIVITY COEFFICIENTS FALL...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online