Question
These substances are classified as either heterogeneous or homogeneous depending on whether or not they exist in the same phase of matter as the reactants or products they act on. For 10 points each:
[10e] Name these substances that speed up reaction rates by enabling a reaction pathway with lower activation energy.
ANSWER: catalysts [or heterogeneous catalysts or homogeneous catalysts]
[10m] The high surface area of these aluminosilicates makes them ideal heterogeneous catalysts. The microporous structure of these materials also allows them to act as molecular sieves.
ANSWER: zeolites
[10h] The effectiveness of heterogeneous catalysts like zeolites can be quantified with this parameter, which is usually reserved for pellet catalysts. The square of this parameter equals the reaction rate over diffusion rate.
ANSWER: Thiele modulus
<Chemistry>
Summary
| 2024 ACF Regionals @ JMU | 01/27/2024 | Y | 3 | 13.33 | 100% | 33% | 0% |
| 2024 ACF Regionals @ Imperial | 01/27/2024 | Y | 1 | 20.00 | 100% | 100% | 0% |
| 2024 ACF Regionals @ Vanderbilt | 01/27/2024 | Y | 5 | 10.00 | 100% | 0% | 0% |
| 2024 ACF Regionals @ MIT | 01/27/2024 | Y | 1 | 20.00 | 100% | 100% | 0% |
Data
| Durham A | Oxford A | 10 | 10 | 0 | 20 |