5forsigfigs h l 247 cm 975x10 3 cm n 2534 plates 2

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Unformatted text preview: each setup, 1 point for each answer, ‐0.5 for sig figs N= 2775 + 2472 + 2365 + 2523 = 2534 or 2.53x103 plates 4 SD = ( 2775 - 2534 )2 + ( 2472 - 2534 )2 + ( 2365 - 2534 )2 + ( 2523 - 2534 )2 4 -1 = 174 or 2x10 2 (c) 1 point for setup, 1 point for answer, ‐0.5 for sig figs H= L 24.7 cm = = 9.75x10-3 cm N 2534 plates 2. (10 points, Skoog 26‐15) From the data in Problem 1 (Skoog 26‐14), calculate for A, B, C, and D a) the retention factor. b) the distribution constant. (a) 2 points for set‐up, 0.75 points for each answer, ‐0.25 for sig figs k= tR − tM tM 5.4 − 3.1 = 0.74 3.1 14.1 − 3.1 = 3.5 for C: k = 3.1 13.3 − 3.1 = 3.3 3.1 21.6 − 3.1 = 6.0 for D: k = 3.1 for A: k = for B: k = (b) 2 points for set‐up, 0.75 points f...
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This note was uploaded on 02/05/2013 for the course CHEM 420 taught by Professor Kelleher during the Spring '08 term at University of Illinois, Urbana Champaign.

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