Many heterogeneous catalysts are deposited on high-surfacearea supports. Why?

Video transcript

Hey everyone in this example, we're asked which of the following does not apply to the heterogeneous catalysts. In statement, they were told that heterogeneous catalysts exist in the same phase as the reactant we want to actually correct this so that it says that they exist in a different phase as the reactant. So this would be actually a false statement that we had since we had to correct it. Moving onto choice B we're told that heterogeneous catalysts have a large surface area. We would say that this is a true statement because a large service area allows for better interaction between our catalysts and our reactant. So we would rule out choice be since it's it does apply to heterogeneous catalysts catalysts. Moving onto choice, see it says that chemists option is usually involved in heterogeneous catalysts catalysis. We would also say that this is a true statement because during chemise option, we would say our reactant molecules are absorbed chemically into the heterogeneous catalyst. So, see we would also rule out since it's another true statement that does apply to heterogeneous catalysts. And moving to choice D. It's as an example of heterogeneous catalysis is the haber bosch process of ammonia synthesis. So we should recall that the haber bosch process is going to involve a metal catalyst between our reaction of N two and H two. And so we would actually agree that d is also a true statement. So, we can rule choice D out Leaving us with choice A as the only answer, choice of a statement that does not apply to heterogeneous catalysts because we disagreed that heterogeneous catalysts exist in the same phase as reactant, they should always exist in a different phase. So this is our correction here. So I hope that everything I explained was clear, is our final answer. If you have any questions, please leave them down below, and I will see everyone in the next practice video.