Modern Analytical Cheymistry - Chapter 3 ppsx

... make the material in the chapters that follow easier to read and understand. 1400-CH 03 9/8/99 3: 51 PM Page 35 Chapter 3 The Language of Analytical Chemistry 37 Figure 3. 1 Membrane filter showing ... 100 1400-CH 03 9/8/99 3: 51 PM Page 38 CChhaapptteerr 3 35 The Language of Analytical Chemistry Analytical chemists converse using terminology that conveys specific meanin...

Ngày tải lên: 13/08/2014, 02:20

... and Protocols 36 3C Classifying Analytical Techniques 37 3D Selecting an Analytical Method 38 3D.1 Accuracy 38 3D.2 Precision 39 3D .3 Sensitivity 39 3D.4 Selectivity 40 3D.5 Robustness and Ruggedness 42 3D.6 ... Terms 32 2H Summary 33 2I Problems 33 2J Suggested Readings 34 2K References 34 Chapter 3 The Language of Analytical Chemistry 35 3A Analysis, Deter...

Ngày tải lên: 13/08/2014, 02:20

... PO MM + + =××=× 3 1 76 10 5 28 10 34 33 250 10 1 1 1 35 4 53 705 10 2 3 . . . –– – – × ×× =× 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 ... numbers. a. 9 03 b. 0.9 03 c. 1.09 03 d. 0.09 03 e. 0.09 030 f. 9. 03 × 10 2 2. Round each of the following to three significant figures. a. 0.8 937 7 b. 0.8 932 8 c....

Ngày tải lên: 13/08/2014, 02:20

... States Penny in Circulation Mass Replicate Number (g) 1 3. 025 2 3. 024 3 3.028 4 3. 027 5 3. 028 6 3. 0 23 7 3. 022 8 3. 021 9 3. 026 10 3. 024 Figure 4 .3 Close-up of buret, showing difficulty in estimating volume. ... parts per thousand (ppt) 2-chloroethylsulfide yielded the following results 43. 3 34 .8 31 .9 37 .8 34 .4 31 .9 42.1 33 .6 35 .3 (a)Determine whether th...

Ngày tải lên: 13/08/2014, 02:20

... 2. 833 9 0.0000 0.0000 0.0000 0.0000 0.100 12 .36 2. 833 9 0.2 834 35 .0270 0.02 83 3.5027 0.200 24. 83 0. 231 3 0.04 63 5.7 432 0.00 93 1.1486 0 .30 0 35 .91 0.0671 0.0201 2.4096 0.0060 0.7229 0.400 48.79 0.0 234 ... factor. x i y i s i s i –2 w i 0.000 0.00 0.02 2500.00 2. 833 9 0.100 12 .36 0.02 2500.00 2. 833 9 0.200 24. 83 0.07 204.08 0. 231 3 0 .30 0 35 .91 0. 13 59.17 0.0671 0...

Ngày tải lên: 13/08/2014, 02:20

... reaction Zn 2+ (aq) + 3NH 3 (aq) t Zn(NH 3 ) 3 2+ (aq) for which Taking the log of each side gives β 3 3 3 2 2 3 3 6 72 10==× + + [( )] [][] . Zn NH Zn NH 1400-CH06 9/9/99 7:40 AM Page 154 160 Modern Analytical ... 10 2 Zn(NH 3 ) 2 2+ (aq)+NH 3 (aq) t Zn(NH 3 ) 3 2+ (aq) K 3 = 2 .3 × 10 2 show that the formation of Zn(NH 3 ) 3 2+ is more favorable than the f...

Ngày tải lên: 13/08/2014, 02:20

... extraction of a molecular weak base. *The derivation of equation 7 .31 is considered in problem 33 in the end-of -chapter problem set. 1400-CH07 9/8/99 4:04 PM Page 221 Figure 7.11 Illustration of a dialysis ... 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...

Ngày tải lên: 13/08/2014, 02:20

... g/mol g Al(C H 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. 2 3- mg sample of MgC 2 O 4 •H 2 O ... (g) 0–2 1.590 43. 21 52.10 49.49 2–4 1.745 40.62 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 1.658 43. 62 51.88 47. 53...

Ngày tải lên: 13/08/2014, 02:20

... Comment Na 2 CO 3 Na 2 CO 3 +2H 3 O + → H 2 CO 3 + 2Na + +2H 2 Oa TRIS (HOCH 2 ) 3 CNH 2 +H 3 O + →(HOCH 2 ) 3 CNH 3 + +H 2 Ob Na 2 B 4 O 7 Na 2 B 4 O 7 +2H 3 O + +3H 2 O → 2Na + +4H 3 BO 3 Standardization ... –0.2 73 3.00 0.270 4.00 5.06 5.00 –0. 033 7.00 0. 138 10.00 5.89 9.00 –0.002 11.00 0. 130 12.00 6.15 12.00 0.055 13. 00 0.240 14.00 6. 63 13. 75 0.140 14.50...

Ngày tải lên: 13/08/2014, 02:20

... Fe(o-phenanthroline) 3 2+ . 5 s 4 s Energy 3 s 5 p 5 p 4 p 3 p 3 p 4 p 33 0 .3 330 .2 818 .3 819.5 589.0 589.6 1 138 .3 1140.4 4 d 3 d Figure 10.18 Valence shell energy diagram for sodium. 1400-CH10 9/8/99 ... common example of a single-beam spectropho- tometer is the Spectronic-20 manufactured by Milton-Roy. The Spectronic-20 can be used from 34 0 to 625 nm (950 nm with a red-...

Ngày tải lên: 13/08/2014, 02:20