Question
The internal effectiveness factor times the square of this quantity gives the Weisz-Prater parameter, which is very small when pore diffusion is negligible. For 10 points each:
[10h] Name this quantity, the coefficient of the concentration term in a differential equation that describes a material balance over a spherical pellet.
ANSWER: Thiele modulus
[10e] The Thiele modulus quantifies the effects of diffusion and particle size in these substances, which reduce the activation energy.
ANSWER: catalysts
[10m] For a reaction limited by external diffusion, the reaction rate does not obey Arrhenius kinetics, instead varying with temperature raised to this power. A uni·molecular rate law in which concentration is raised to this power produces a rate constant with units of inverse seconds.
ANSWER: 1 or one [or first power or unity]
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Summary
| 2023 BHSU @ Berkeley | 03/18/2023 | Y | 3 | 13.33 | 100% | 33% | 0% |
| 2023 BHSU @ Maryland | 03/11/2023 | Y | 3 | 10.00 | 100% | 0% | 0% |
| 2023 BHSU @ Northwestern | 02/25/2023 | Y | 6 | 11.67 | 100% | 17% | 0% |
| 2023 BHSU Online | 04/15/2023 | Y | 4 | 17.50 | 100% | 75% | 0% |
| 2023 BHSU @ Sheffield | 04/15/2023 | Y | 2 | 10.00 | 100% | 0% | 0% |
| 2023 BHSU @ Waterloo | 04/15/2023 | Y | 3 | 10.00 | 100% | 0% | 0% |
| 2023 BHSU @ Yale | 04/08/2023 | Y | 3 | 13.33 | 100% | 33% | 0% |
Data
| Cornell C++ | Cornell B- | 0 | 10 | 10 | 20 |
| Rollin in from Sturgis, The Cheyne Gang | Dr. Christopher Manners, MD – Samarra, Iraq | 0 | 10 | 10 | 20 |
| Houston and friends | What is BH! And you are asking me? BHSU | 0 | 10 | 0 | 10 |
| Hutto Hippos | The Enrique Trastamara Military Academy B | 0 | 10 | 10 | 20 |