Phosphine, PH3(g)PH3(g), decomposes according to the equation 4PH3(g)⟶P4(g)+6H2(g)4PH3(g)⟶P4(g)+6H2(g) The kinetics of the decomposition of phosphine at 950950 K was followed by measuring the total pressure in the system as a function of time. The data in the table were obtained in a run where the reaction chamber contained only pure phosphine at the start of the reaction. Time (min) Ptotal (Torr) 0.00 100 40.0 151 80.0 168 100 171 Choose the rate law that describes this reaction. rate=?(?PH3)−1rate=k(PPH3)−1 rate=?(?PH3)2rate=k(PPH3)2 rate=?rate=k rate=?(?PH3)−2rate=k(PPH3)−2 rate=?(?PH3)rate=k(PPH3) Calculate the value of the rate constant and determine the correct units.
Phosphine, PH3(g)PH3(g), decomposes according to the equation 4PH3(g)⟶P4(g)+6H2(g)4PH3(g)⟶P4(g)+6H2(g) The kinetics of the decomposition of phosphine at 950950 K was followed by measuring the total pressure in the system as a function of time. The data in the table were obtained in a run where the reaction chamber contained only pure phosphine at the start of the reaction. Time (min) Ptotal (Torr) 0.00 100 40.0 151 80.0 168 100 171 Choose the rate law that describes this reaction. rate=?(?PH3)−1rate=k(PPH3)−1 rate=?(?PH3)2rate=k(PPH3)2 rate=?rate=k rate=?(?PH3)−2rate=k(PPH3)−2 rate=?(?PH3)rate=k(PPH3) Calculate the value of the rate constant and determine the correct units.
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter13: Chemical Kinetics
Section: Chapter Questions
Problem 13.94QE
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Phosphine, PH3(g)PH3(g), decomposes according to the equation
4PH3(g)⟶P4(g)+6H2(g)4PH3(g)⟶P4(g)+6H2(g)
The kinetics of the decomposition of phosphine at 950950 K was followed by measuring the total pressure in the system as a function of time. The data in the table were obtained in a run where the reaction chamber contained only pure phosphine at the start of the reaction.
| Time (min) | Ptotal (Torr) |
|---|---|
| 0.00 | 100 |
| 40.0 | 151 |
| 80.0 | 168 |
| 100 | 171 |
Choose the rate law that describes this reaction.
rate=?(?PH3)−1rate=k(PPH3)−1
rate=?(?PH3)2rate=k(PPH3)2
rate=?rate=k
rate=?(?PH3)−2rate=k(PPH3)−2
rate=?(?PH3)rate=k(PPH3)
Calculate the value of the rate constant and determine the correct units.
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