In a study of the rearrangement of ammonium cyanate to urea in aqueous solution at 50 °C NH4NCO(aq)(NH2)2CO(aq) the following data were obtained: [NH4NCO], M 0.780 0.390 0.195 9.75×10-2 minutes 0 131 393 918 Hint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 0.780 M is______ min and when the starting concentration is 0.390 M is ______min. (2) The average (1/[NH4NCO]) / t from t = 0 min to t = 131 min is______ M-1 min-1. The average (1/[NH4NCO]) / t from t = 131 min to t = 393 min is_____ M-1 min-1. (3) Based on these data, the rate constant for this _______ (zerofirstsecond) order reaction is M-1 min-1. fill in the blanks
In a study of the rearrangement of ammonium cyanate to urea in aqueous solution at 50 °C NH4NCO(aq)(NH2)2CO(aq) the following data were obtained: [NH4NCO], M 0.780 0.390 0.195 9.75×10-2 minutes 0 131 393 918 Hint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 0.780 M is______ min and when the starting concentration is 0.390 M is ______min. (2) The average (1/[NH4NCO]) / t from t = 0 min to t = 131 min is______ M-1 min-1. The average (1/[NH4NCO]) / t from t = 131 min to t = 393 min is_____ M-1 min-1. (3) Based on these data, the rate constant for this _______ (zerofirstsecond) order reaction is M-1 min-1. fill in the blanks
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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In a study of the rearrangement of ammonium cyanate to urea in aqueous solution at 50 °C
NH4NCO(aq)(NH2)2CO(aq)
the following data were obtained:
| [NH4NCO], M | 0.780 | 0.390 | 0.195 | 9.75×10-2 |
| minutes | 0 | 131 | 393 | 918 |
Hint: It is not necessary to graph these data.
(1)
The observed half life for this reaction when the starting concentration is 0.780 M is______ min and when the starting concentration is 0.390 M is ______min.
(2)
The average (1/[NH4NCO]) / t from t = 0 min to t = 131 min is______ M-1 min-1.
The average (1/[NH4NCO]) / t from t = 131 min to t = 393 min is_____ M-1 min-1.
(3)
Based on these data, the rate constant for this _______ (zerofirstsecond) order reaction is M-1 min-1.
fill in the blanks
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