Modern Analytical Cheymistry - Chapter 11 ppt

... reference electrode Di-( n -decyl) phosphate reservoir Standard Ca 2+ solution Membrane saturated with di-( n -decyl) phosphate Figure 11. 14 Schematic diagram of a Ca 2+ liquid-based ion-selective electrode. ionophore A ... EE RT nF Q=− ° ln 468 Modern Analytical Chemistry *See Chapter 6 for a review of the Nernst equation. 1400-CH11 9/9/99 2:06 PM Page 468 Figure 11. 16 Schematic...

Ngày tải lên: 13/08/2014, 02:20

... 3:59 PM Page 113 130 Modern Analytical Chemistry 5 E KEY TERMS aliquot (p. 111 ) external standard (p. 109) internal standard (p. 116 ) linear regression (p. 118 ) matrix matching (p. 110 ) method ... after dilution. 114 Modern Analytical Chemistry V S S spiked x -intercept = (a) – C A V o C S y -intercept = kC A V o V f Slope = kC S V f S spiked x -intercept = (b) – C A V o V...

Ngày tải lên: 13/08/2014, 02:20

... treatment. xii Preface Preface 1400-Fm 9/9/99 7:38 AM Page xii • Problems adapted from the literature. Many of the in -chapter examples and end- of -chapter problems are based on data from the analytical literature, ... 485 11B.6 Evaluation 494 11C Coulometric Methods of Analysis 496 11C.1 Controlled-Potential Coulometry 497 11C.2 Controlled-Current Coulometry 499 11C.3 Quantitative Appli...

Ngày tải lên: 13/08/2014, 02:20

... containing one mole (FW). 1400-CH02 9/8/99 3:48 PM Page 17 CChhaapptteerr 2 11 Basic Tools of Analytical Chemistry In the chapters that follow we will learn about the specifics of analytical chemistry. ... 000 g mg Cl L g m mole Cl gCl M p-function A function of the form pX, where pX = -log(X). 1400-CH02 9/8/99 3:48 PM Page 19 Chapter 2 Basic Tools of Analytical Chemistry 15...

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, ... techniques, and the cor- responding techniques are gravimetry (Chapter 8), titrimetry (Chapter 9), and coulometry (Chapter 11) . With a few exceptions, the signal in a total analysi...

Ngày tải lên: 13/08/2014, 02:20

... use a 25-mL pipet four times; or (c) use a 10-mL pipet ten times? 11. A solution can be diluted by a factor of 200 using readily available pipets (1-mL to 100-mL) and volumetric flasks (10-mL to ... 10-mL pipet for de- livering solutions. A pipet’s uncertainty is the range of volumes in which its true volume is expected to lie. Sup- pose you purchase a 10-mL class A pipet from a labora- tor...

Ngày tải lên: 13/08/2014, 02:20

... potential under standard-state conditions. Dividing through by –nF leads to the well-known Nernst equation. 146 Modern Analytical Chemistry *Separating a redox reaction into its half-reactions is useful ... are [Pb 2+ ] = 0.10 + x ≈ 0.10 M [I – ]=2x = 1.6 × 10 –6 M Chapter 6 Equilibrium Chemistry 157 1400-CH06 9/9/99 7:40 AM Page 157 150 Modern Analytical Chemistry ladder diagram A...

Ngày tải lên: 13/08/2014, 02:20

... preserved by controlling the solu- 194 Modern Analytical Chemistry 1400-CH07 9/8/99 4:03 PM Page 194 Colorplate 4 shows an example of a liquid–liquid extraction. 218 Modern Analytical Chemistry (b) The ... separation include liquid-to-gas and solid-to-gas phase transitions. Changes in chemical state involve one or more chemical reactions. Changes in Physical State When the analyte and...

Ngày tải lên: 13/08/2014, 02:20

... 0.9 0 .114 0 0.0770 30 0.42 0.9 0 .115 5 0.0770 30 0.42 0.3 0 .115 0 0.0770 30 0.42 18.0 0 .115 2 0.0770 30 0.42 48.0 0 .116 0 0.0770 30 0.42 75.0 0 .115 9 0.0770 50 0.42 0.9 0 .115 6 0.0770 75 0.42 0.9 0 .115 8 0.0770 ... NO) 23 23 96 3 96 3 23 96 3 23 96 3 96 3 96 3 252 Modern Analytical Chemistry 1400-CH08 9/9/99 2:18 PM Page 252 262 Modern Analytical Chemistry EXAMPLE 8. 7 A 26.23...

Ngày tải lên: 13/08/2014, 02:20

... mixture. *See Chapter 11 for a further discussion of ion-selective electrodes. 1400-CH09 9/9/99 2:13 PM Page 322 Figure 9.4 Volumetric buret showing a portion of its graduated scale. 278 Modern Analytical ... aa ab − −− − = − + = ×−× + =× MV MV VV 110 110 50 55 48 10 44 6 [] (( . HO M)(50 mL) M)(45 mL) M 3 + aa bb ab = − + = ×−× + =× −− − MV MV VV 110 110 50 45 53 10 44 6 pH p...

Ngày tải lên: 13/08/2014, 02:20