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Catalysis: Homogeneous & Heterogeneous Video Lecture | Chemistry for EmSAT Achieve

FAQs on Catalysis: Homogeneous & Heterogeneous Video Lecture - Chemistry for EmSAT Achieve

1. What is catalysis?

Ans. Catalysis is a process that increases the rate of a chemical reaction by providing an alternative pathway with lower activation energy. It involves the participation of a substance called a catalyst, which remains unchanged at the end of the reaction.

2. What is the difference between homogeneous and heterogeneous catalysis?

Ans. In homogeneous catalysis, the catalyst and reactants are in the same phase, usually a liquid or gas. In heterogeneous catalysis, the catalyst is in a different phase than the reactants, often a solid surface.

3. How does homogeneous catalysis work?

Ans. In homogeneous catalysis, the catalyst is present in the same phase as the reactants. It forms temporary bonds with the reactant molecules, altering their electronic structure and lowering the activation energy required for the reaction to occur. This allows the reaction to proceed at a faster rate.

4. What are some examples of heterogeneous catalysis?

Ans. Heterogeneous catalysis is commonly observed in many industrial processes. Some examples include catalytic converters in automobiles, where a solid catalyst helps convert harmful exhaust gases into less toxic substances, and the Haber-Bosch process, which uses a solid catalyst to produce ammonia from nitrogen and hydrogen gases.

5. What are the advantages of catalysis?

Ans. Catalysis offers several advantages in chemical reactions. It can increase reaction rates, improve selectivity towards desired products, reduce energy consumption, and enable the use of milder reaction conditions. Additionally, catalysts are typically reusable and can be employed in continuous processes, making them cost-effective and environmentally friendly.

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