Problem Sets Sp97

Problem Sets

Chem 102, Sp97

Skoog, West and Holler, Fundamentals of Analytical Chemistry, 7th Ed.

Basic1:
Ch 5, p. 98
12 moles given grams
14 grams given moles
18 grams from grams reacting
20 grams from % reacting
Ch. 6, p. 119
6 moles given V and M
10 M given % and density
13 w/v and w/w preparations
17 various solution preps
19 M from a standardization

Grav1:
Ch. 5, p. 98:
21 mixture precipitated
29 grav from series of reactions
31 grav from series of reactions
35 minimum-maximum grav
37 two-component grav

Stat 1
Ch. 2, p. 20
6 cal % rel error
7 calc amount given rel error
Ch. 3, p. 44
5 mean, median, range, s, CV
(CV=s/mean x 100%)
13 pooled s

Stat2
Ch. 4, p. 69
13 CL two means
17 Q test
19 LLS analysis (use spreadsheet)

Ksp1
Ch. 7, p. 146
9 write Ksp Expressions
10 Ksp in terms of s
11 calc Ksp from s
12 calc s with common ion
14 conc to start ppt
16 mixture problems

Ionic1
Ch. 8, p. 158
7 compute ionic strength
8 compute activity coeff
11 do Ksp w. activities

Ksp2
Ch. 9, p. 187
5 mass balance expressions
6 charge balance expressions
12 s of PbCO3 given pH (messy - see my way)

KspTitrCurve
Ch. 13, p. 277
29 three ppt titr. curves

AB1 (WA, WB, SA, SB)
Ch. 7, p. 146
4 id conj. acids & bases
6 autoprotolysis expressions
8 AB eq. const. expressions
21 pH of WA & WB
22 pH of WA & WB
Ch. 10, p. 231
20 very dilute SB
24 pH of SA w. activity
26 pH of WA
28 pH of WB

AB2 (buffers)
Ch. 10, p. 222
34 WA SB mixture
37 pH of buffer prep
42 pH of SA + buffer
43 add WB to WA to get pH

AB3 (monoprotic titration curves & alphas)
Ch. 10, p. 222
47 SA SB curve
50 SB WA curve
51 SA WB curve
53 alpha0 & alpha1 of WA

AB4 (polyprotic)
Ch. 11, p. 245
6 end pt. pH H3A
9 pH of H3A
10 pH of NaH2A
11 pH of Na3A
12 pH of poly buffers
20 calc buffer given pH
28 poly titration curves

AB5 (messy AB applications)
Ch. 12, p. 262
29 air sample back titr.
44 SB carbonates mixture.

CF1 (messy titrations)
Ch. 14, p. 301
16 Fe(II) and Fe(III) mixture
18 Pb and Cd mixture
20 Zn and Fe mixture

CF2 (equilibrium and titr curve)
Ch. 14, p. 302
25 conditional Kf
27 Sr w EDTA curve

Spec1 (%T and Beer's Law)
Ch. 22, p. 525
11 complete abC, %T etc. table
16 A of diluted sample
Ch. 23, p. 555
10 %T and A from P and Po
Ch. 24, p. 598
8 conc range for 10-90%T

Spec2 (Working Curve-LLS spreadsheet)
Ch. 24, p. 600
27 LLS workup (use spreadsheet)
28 error analysis of 27 (ss)
Ch. 26, p. 636
11 LLS of AAS data (ss)

EC1 (Balance redox reactions)
Ch. 15, p. 328
9 balance reactions
10 write balanced half reactions
11 write half reactions, then rank

EC2 (Nernst Equation)
Ch. 15, p. 328
13 Cu electrode in solns
16 Pt electrode in solns
18 anodes and cathodes

Redox1 (cell potentials and titr curves)
Ch. 16, p. 359
8 calc Nernst cell potentials
14 calc redox titration curves

Redox2 (messy vol redox calcs)
Ch. 17, p. 383
28 permanganate stdz vs oxalate
30 generate I2, then titrate
32 Sb in ore, I2 method
43 back titration and I2
49 SO2 gas analysis

ISE (conc from potentials)
Ch. 19, p. 429
7 calc pM given E
11 calc pH given std E

(See handouts for other ISE calcs. SWH has a very poor selection.)

SEP (few good problems)
Ch. 29, p. 700
17 GLC conc from peak areas.