2

Th 1/20
Tu 1/25

1. Check in, balance instruction. Weigh the same weighing bottle on all ten electronic balances and record the results on the posted form.

3+1

Th 1/27
Tu 2/08

2. Gravimetric Determination of Chloride in a Soluble Sample. Method 36A, p. 814-816 (7th ed); 37B-1, pp. 1062-1064 (8th Ed). Let ppt stand overnight instead of heating. Do exp. 3 during any free time--e.g. drying.

with (2.)

3. Calibrate Glassware. Section 35I on pp. 806-808. (7th ed); 2H, pp. 48-50 (8th Ed.) Do two pipets, one vol flask, and your buret. Use free time during exp. 2.

4

Th 2/10
Tu 2/22

4. Determination of Chloride by the Fajans method and by Potentiometry. See Absorption Indicator Method 36C-1 and 36C-2 on pp. 827-828. (7th ed); 37D, p. 1075 (8th Ed). Standardize AgNO3 vs. NaCl standard. One titration will use a potentiometric end point with 1 mmole of KI and 2 mmole of NaCl standard, followed by computer analysis. See the Handout on Grans analysis and the Lab Notes.

4

Th 2/24
Tu 3/08

5. Determination of Sodium Carbonate in an Impure Sample. Method 36B-10, p. 824. (7th ed); 37C-10, p. 1072 (8th Ed). Computer end point methods on handout. Run replicates with indicator for unk value, then run one sample with a pH meter and use computer methods to analyze the end points.

3

Th 3/10
Th 3/17

6. Complexometric Determination of Calcium by EDTA titration. Methods under 36D, pp. 830-832 (7th ed); 37E-5, p. 1080 (8th Ed)--these will need modification. Solid unknown--see Lab Notes for sample prep, standardize EDTA vs. CaCO3, report %CaO. [then Spring Break 3/21/05 to 3/25/05]

4-1 = 3 CC on 3/31

Tu 3/29
Th 4/07

7. Determination of Fe in Ore by Spectrophotometry and Atomic Absorption. Based on Method 36M-2, pp. 859-860 (7th ed); 37N-2, p. 1105 (8th Ed). You will need to find the methods for dissolving Fe ore to get an aqueous sample. Look at 36E-4, p. 836 (7th ed); 37F-4, p. 1084 (8th Ed). New concentrations will be required for Atomic Absorption. This will require some planning by the student.

4

Tu 4/12
Th 4/21

8. Redox Determination of Copper. Methods 36G-3 and 36G-4, pp. 842-844. (7th ed); 37H-3, p. 1090, 37H-4, p. 1092 (FAC8). There is some messy chemistry here. Plan this experiment carefully.

4

Tu 4/26
Th 5/05

9. Quantitative Analysis by Gas Chromatography (36Q, p. 868) (7th ed); 37R, p. 1114 (8th Ed).*

*The GLC Report is due Monday of Final Exam Week at Noon. Late reports will be assessed 10 points per half-day late and will not be accepted after the final exam.

1

Tu 5/10

10. Check out of lab. No experimental work on this day. Lab will be closed on Thursday because of Faculty Consultation Days.

See the handout on "The 102 Laboratory Notes" for additional details on these experiments, laboratory notebook organization, and report formats. Results (if not a full written report) are due the Tuesday following the experiment. Written reports are due one week after the completion date, except for GLC as noted. Each experiment is worth 100 points unless otherwise specified. Notebook clarity and organization is worth 10 points on selected experiments. A late penalty of 5 points per period may be assessed at the discretion of the instructor. Recalculation of an unknown result, or a reissue of an unknown due to improper sample management or a redo will cost 20 points. The minimum grade for a completed 100 pt experiment is 30 points.