Modern Analytical Cheymistry - Chapter 8 pot

... 48. 83 46.00 4–6 1.619 41.23 52 .86 47 .84 6 8 1.611 42.10 50.59 47.13 8 10 1.6 58 43.62 51 .88 47.53 10–12 1.6 28 43.24 49.45 45.31 12–14 1.633 43. 08 47.92 44.20 14–16 1.630 43.96 58. 31 55.53 16– 18 ... Chemistry 2 68 Modern Analytical Chemistry 1400-CH 08 9/9/99 2: 18 PM Page 2 68 Chapter 8 Gravimetric Methods of Analysis 241 A solute’s relative supersaturation, RSS, ca...

Ngày tải lên: 13/08/2014, 02:20

... – – – HO 3 81 3 8 14 8 10 6 32 10 4 5 10 0 10 6 32 10 1 00 10 0 10 6 32 10 186 10 + = ×× +× × +× =× [ ] ( . )( . ) . –– – HO M 3 310 7 4 487 10 1 3 58 10 7 80 7 10 + =× ×=× []HO aa312 + = KK 1400-CH06 ... solvent (K b ). 1400-CH06 9/9/99 7:40 AM Page 141 1 48 Modern Analytical Chemistry Solving for K gives the equilibrium constant as log K = 40.65 58 K = 4.527 × 10 40 (c) Th...

Ngày tải lên: 13/08/2014, 02:20

... of analysis. 626 Modern Analytical Chemistry Chemical kinetic methods Direct-computation methods Curve-fitting methods Integral methods Rate methods Fixed-time One-point Two-point Variable-time One-point Two-point Initial ... initial con- centration of analyte, [A] 0 , is calculated using equation 13.2, 13.6, or 13 .8, depend- ing on whether the reaction follows first-order, pseudo-first-...

Ngày tải lên: 13/08/2014, 02:20

... RRRR C = +++ − +++ =− 1357 24 68 44 005. E RRRR RRRR B = +++ − +++ = 1256 34 78 44 005. E RRRR RRRR A = +++ − +++ = 1234 56 78 44 030. 686 Modern Analytical Chemistry 1400-CH14 9 /8/ 99 4:36 PM Page 686 Figure 14.16 Partitioning ... 0.9 1.2 1.5 1 .8 2.1 2.4 2.7 3 3.3 3.6 3.9 4.2 4.5 4 .8 5.1 5.4 5.7 7.6 7.2 6 .8 6.4 6 5.6 5.2 4 .8 4.4 4 3.6 3.2 2 .8 2.4 2 1.6 1.2 0 .8 0.4 1...

Ngày tải lên: 13/08/2014, 02:20

... the Method 683 14B.1 Single-Operator Characteristics 683 14B.2 Blind Analysis of Standard Samples 683 14B.3 Ruggedness Testing 684 14B.4 Equivalency Testing 687 1400-Fm 9/9/99 7: 38 AM Page viii Boston ... Samples 80 4D.6 A Cautionary Statement 81 4E Statistical Analysis of Data 82 4E.1 Significance Testing 82 4E.2 Constructing a Significance Test 83 4E.3 One-Tailed and Two-Ta...

Ngày tải lên: 13/08/2014, 02:20

... × == 14 Modern Analytical Chemistry 1400-CH02 9 /8/ 99 3: 48 PM Page 14 20 Modern Analytical Chemistry 0.12 0.10 0. 08 0.06 0.04 0.02 0.00 [H + ] (M) Volume NaOH (mL) 0 204060 [H + ] pH 80 pH 14 12 10 8 6 4 2 0 Figure ... solute per unit volume or unit mass of solution. 1400-CH02 9 /8/ 99 3: 48 PM Page 15 12 Modern Analytical Chemistry 2A Numbers in Analytical Chemistry...

Ngày tải lên: 13/08/2014, 02:20

... evaluating analytical methods may be found in Wilson, A. L. “The Performance-Characteristics of Analytical Methods,” Part I-Talanta, 1970, 17, 21–29; Part II-Talanta, 1970, 17, 31–44; Part III-Talanta, ... Vol. 1, Chapter 1, pp. 3–6; (b) Potts, L. W. Quantitative Analysis—Theory and Practice. Harper and Row: New York, 1 987 , p. 12. 8. Valcárcel, M.; Ríos, A. Anal. Chem. 1993, 65, 781...

Ngày tải lên: 13/08/2014, 02:20

... 0.05. Analyst A Analyst B 86 .82 81 .01 87 .04 86 .15 86 .93 81 .73 87 .01 83 .19 86 .20 80 .27 87 .00 83 .94 t XX snn exp (/ / ) .(//) .= − + = − + = AB pool A B 11 3 117 3 081 0 0459 1 7 1 5 134 s nsns nn pool A A B B AB = −+− +− = −+− +− = ()() ()(. ... + A 2 A B 2 B X ts n X ts n A A A B B B ±=± Chapter 4 Evaluating Analytical Data 89 µ µ AA A A BB B B =± =± X ts n X...

Ngày tải lên: 13/08/2014, 02:20

... 2.53 2.50 2.70 2.63 2.70 2 .80 2.52 0. 387 8. 42 7.96 8. 54 8. 18 7.70 8. 34 7. 98 1 .85 1 29.65 28. 70 29.05 28. 30 29.20 29.95 28. 95 5.734 84 .8 85.6 86 .0 85 .2 84 .2 86 .4 87 .8 Determine the standardization ... W x b S samp 1.6667 0.2500 1 62.4746 0 .80 00 5.0000 0.5000 2 82 .7915 1.0000 8. 3333 0.7500 3 103.1 085 1.2000 9.5507 0 .84 13 11.6667 1.0000 analyte-free c 0.10...

Ngày tải lên: 13/08/2014, 02:20

... 0. 085 0.1015 1.0 78 0.1012 0.413 0.1010 1.2 48 0.1060 0.654 0.0997 0.507 0.25 0.2515 0 .84 7 0.2465 0.5 98 0.2770 0.431 0.2460 0 .84 2 0.2 485 0.964 0.2590 1.1 78 0.50 0.5 084 1.009 0.4954 0.947 0.5 286 ... fungicides octadecyl (C- 18) —C 18 H 37 • retains hydrophobic species from aqueous matrices • caffeine, sedatives, polyaromatic hydrocarbons, carbohydrates, pesticides octyl (C -8...

Ngày tải lên: 13/08/2014, 02:20