{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Exam1key - Chemistry 241 Exam 1 Honor Pledge I have neither...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry 241 Exam 1 May 18, 2010 Honor Pledge: I have neither given or received help on this exam, nor have I seen anyone else do so. ______________________________(Signed) 1. 2. 3. 4. 5. 6. 7. 8. 9. Total ________ 15 10 10 10 10 10 10 10 15 100 SHOW YOUR WORK CIRCLE NUMERICAL ANSWERS 1.(15pts) What chromatographic technique would be best for the following analyses? (Be as specific as possible.) a) separating the polar involatile disinfection by-products in drinking water. Normal phase HPLC b) separating compounds responsible for the aroma of red wine. Gas Chromatography c) determine the specific presence of cocaine in urine. Affinity Chromatography d) separating sodium and potassium in a blood sample. Ion Exchange Chromatography e) determine the molecular weight of the polymer polyethylene glycol. Gel Permeation or Molecular Exclusion or Size Exclusion 2.(10pts) For a given chromatographic column, the constants in the Van Deemter equation are: A = 1.65 mm; B = 25.8 mm mL/min; and C= 0.0236 mm min/mL . What is the height equivalent for a theoretical plate if the mobile phase flow rate is: 30 mL/min?
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}