Assignment_2_crib - Chemistry 224 Problem Set DUE:...

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Chemistry 224 Problem Set DUE: Thursday, February 11, turn in before the exam 8-4 (read section 8B-3) 8-6 (read section 8B-3) 8-18 8-22
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8-4 2 2 2 0 m s s s s + = From the NIST sample: From the gross sample: 00873 . 0 2 = m s 155 . 0 2 0 = s 38 . 0 00873 . 0 155 . 0 = = s s The relative standard deviation = % 100 92 . 49 38 . 0 % 100 = x s s = 0.76% 8-6 (a) N = () 2 2 2 ) 25 . 0 ( 0 . 49 ) 25 . 0 ( 02 . 0 02 . 0 1 1 = = σ r p p = 784 (b) N = 49.0/(0.1) 2 = 4.9 × 10 3 (c) N = 49.0/(0.05) 2 = 2.0 × 10 4 (d) N = 49.0/(0.01) 2 = 4.9 × 10 5 8-18 A B C D E F G H I 1 Temp, K k , s -1 2 599 0.00054 3 629 0.0025 4 647 0.0052 5 666 0.014 6 683 0.025 7 700 0.064 8 Part (a) 9 1000/Temp log( k ) 10 1.6694491 -3.26761 11 1.5898251 -2.60206 12 1.5455951 -2.284 13 1.5015015 -1.85387 14 1.4641288 -1.60206 15 1.4285714 -1.19382 16
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17 Part (b) 18 Slope LINEST Values 19 Intercept m -8.45629 10.8311 20 Std Error SD m 0.23362 0.358671 21 N r2 0.996956 0.045927 22 Sxx F 1310.21 4 df 23 ybar SSR 2.763575 0.008437 24 Part (c) 25 A = 38697cal/mol SD E A = 26 27 Spreadsheet Documentation 28 A10 = 1000/A2 B22 = DEVSQ(A10:A15) 29 B10 = -LOG(B2) B23 = AVERAGE(B10:B15) 30 B18 = SLOPE(B10:B15,A10:A15) E19:F23 = LINEST(B10:B15,A10:A15,TRUE,TRUE) 31 B19 = INTERCEPT(B10:B15,A10:A15) B25 = -B18*2.303*1.987*1000
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This note was uploaded on 02/16/2012 for the course CHEM 125 taught by Professor Na during the Fall '11 term at Purdue University-West Lafayette.

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Assignment_2_crib - Chemistry 224 Problem Set DUE:...

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