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Parallel Reactions and Selectivity - Chemical Kinetics Video Lecture | Physical Chemistry
FAQs on Parallel Reactions and Selectivity - Chemical Kinetics Video Lecture - Physical Chemistry
| 1. What are parallel reactions in chemical kinetics? |  |
Ans. Parallel reactions in chemical kinetics refer to a situation where multiple reactions occur simultaneously, each with its own rate constant. These reactions may involve different reactants and products, but they occur simultaneously and compete for the same set of reactants.
| 2. How do parallel reactions affect selectivity in chemical reactions? | |
Ans. Parallel reactions can affect the selectivity of a chemical reaction by determining the relative amounts of different products that are formed. The selectivity is influenced by the rate constants of the parallel reactions and their individual reaction pathways. The reaction with the higher rate constant will dominate, leading to a higher selectivity towards its products.
| 3. How can the selectivity of a parallel reaction be controlled? | |
Ans. The selectivity of a parallel reaction can be controlled by adjusting the reaction conditions. Factors such as temperature, pressure, catalysts, and reactant concentrations can influence the rate constants of the parallel reactions. By optimizing these conditions, it is possible to manipulate the selectivity towards desired products.
| 4. What is the role of a catalyst in parallel reactions and selectivity? | |
Ans. Catalysts can play a significant role in parallel reactions and selectivity. They can selectively enhance the rate of specific reactions, favoring the formation of desired products. By providing an alternative reaction pathway with lower activation energy, catalysts can influence the rate constants of parallel reactions and thus impact the selectivity.
| 5. Can parallel reactions and selectivity be studied experimentally? | |
Ans. Yes, parallel reactions and selectivity can be studied experimentally using various techniques. These may include monitoring the concentrations of reactants and products over time, analyzing reaction kinetics, and performing product analysis using techniques such as chromatography or spectroscopy. Experimental data can provide insights into the relative rates of parallel reactions and the selectivity of the overall reaction.
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