1 / 7

Unit 7: Chemical Kinetics

Dive into the fundamentals of chemical kinetics, where we explore the rate of reactions, focusing on reactant X transforming into product Y. Learn about key concepts such as average rate of disappearance and instantaneous rates, and analyze concentration changes over time. Utilize graphs to interpret natural dye concentration and determine the average rate of change in relation to time. Additionally, we will discuss stoichiometric coefficients and how they relate the rates of disappearance of reactants to the formation of products, providing a comprehensive look into reaction dynamics.

misu
Télécharger la présentation

Unit 7: Chemical Kinetics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Unit 7: Chemical Kinetics Rates of Chemical Reactions Day 1

  2. Reactant X Unit 7: Kinetics Reactant X Product Y What is Kinetics? Kinetics is the study of the rate at which a reaction proceeds Product Y Reactant X Product Y Reactant X Reaction Rates How fast can you drive? Product Y X Rate of reaction = Our First Example … Product Y X

  3. Unit 7: Kinetics Reactant Concentration vs. Time For the equation: X  Y Disappearance of reactant X Average “rate of disappearance” Instantaneous rates are normally used in chemistry. How fast is the reaction proceeding at t = 10 m?

  4. Unit 7: Kinetics Reactant Concentration vs. Time For the equation: X  Y Appearance of product Y Find the average “rate of appearance” of Y during the time interval of 5 – 10 minutes.

  5. Unit 7: Kinetics Reactant Concentration vs. Time This graph shows the concentration of a natural dye as a function of time. What is the average rate of change of the dye over the first 2 minutes? The last two minutes? X10-5

  6. Unit 7: Kinetics Relative Rates within a chemical reaction Stoichiometric coefficients can be used to compare the rates of disappearance of reactants to the rates of formation of products General Expression of reaction rate N2O5 2 NO2 + ½ O2

  7. Unit 7: Kinetics Relative Rates within a chemical reaction Stoichiometric coefficients can be used to compare the rates of disappearance of reactants to the rates of formation of products 4 PH3 P4 + 6H2 Relate the rates of disappearance and rates of formation for the previous reaction If the rate of formation of P4 is 0.25 mol/L∙min, what is the corresponding rate of disappearance of PH3?.

More Related