Review Activation Energy Diagrams and Rate Laws

Slides:

Advertisements

Similar presentations

Reaction Rates What affects the rate of reaction?.

Advertisements

The following reaction is first order in A (red spheres) and first order in B (blue spheres): A + B Products Rate = k[A][B]

Endothermic Vs. Exothermic Reaction Graphs. Endothermic Reaction: a reaction in which the products have more stored energy than the reactants. The reaction.

Aim: How to interpret potential energy diagrams? A catalyst provides an alternate reaction pathway, which has a lower activation energy than an uncatalyzed.

Page 34 In a chemical reaction, bonds in the reactants are broken and the atoms rearrange to form new bonds in the products. Flames or heat associated.

Kinetics Class #2 OB: mastering the art of the potential energy diagram, and a few vocabulary words to go with them.

1 What is the collision theory, and how does it relate to reaction rates? Particles must collide and break the existing bonds so they can form new ones.

Higher Chemistry Unit 1(b) Potential energy diagrams.

Energy Levels A Creative Chemistry PowerPoint Presentation By Nigel Saunders Copyright © 2003 Nigel Saunders, all rights reserved Permission is granted.

Energy Changes in Reactions. Aims of lesson: To discuss energy changes in chemical reactions. To draw potential energy diagrams for exothermic and endothermic.

Endothermic and exothermic reactions

ENDOTHERMIC AND EXOTHERMIC REACTIONS. EXOTHERMIC REACTIONS Chemical Reactions that RELEASE heat with the products. You may see an exothermic reaction.

Enthalpy Chemical energy is most commonly converted to heat, we use the symbol, ΔH to symbolize a change in energy available as heat. The symbol is sometimes.

Potential Energy Diagrams. Drill – 5/22/08 1. What is the general rate law format? 2. For the following rate law R = k[H 2 ] 2 [O 2 ] If the concentration.

Indications of Chemical Reaction. Chemical Reaction A process by which one or more substances change to produce one or more different substances. A process.

KEY CONCEPT Life depends on chemical reactions.

Potential Energy Diagrams

An Energy Source. Review your notes on fracking…. Did you write down the essay questions??

Collision Theory. Use the Collision Theory to explain the rate of chemical reactions. Include: Activation energy Draw potential energy diagrams for various.

ENTHALPY. OBJECTIVES  Exothermic changes cause heat to be released to the surroundings  Endothermic changes cause absorption of heat from the surroundings.

What are some different possible types of energy? Some of your answers may have included…….

Chapter 6 Endothermic and Exothermic Reactions Enzymes – Part 1.

Agenda: April 12th  Warm-up: A change requires energy.  Chemical reactions and energy  Endothermic or exothermic  How energy is represented in chemical.

Energy Diagrams: Drawing it Out. Why are we learning this? Energy diagrams show how a reaction works. Energy diagrams display The energy of reactants.

What did the bartender say when oxygen hydrogen sulfur sodium and phosphorous walked into his bar? OH SNaP!

Section 17.1 Part II-Collision Theory We’ve talked about reaction rates but let us take a look at the molecules to see what’s really going on.

Potential Energy Diagrams

Chemistry Chapter 17 – Reaction Kinetics

What is a catalyst and what can they be used for?

Heat changes during a chemical reaction

Energy Levels A Creative Chemistry PowerPoint Presentation

Kinetics and Equilibrium

Unit 5: Thermochemistry

Kinetics Lesson 4 PE Diagrams.

KEY CONCEPT Life depends on chemical reactions.

Trilogy – Chemistry – CHAPTER 5 – Energy changes

Heat and Endothermic and Exothermic Reactions

Potential Energy Diagrams

IV. Reaction Energy (p ) Ch. 17 – Chemical Reactions IV. Reaction Energy (p )

Intro to chemistry Therm o breaking forming

Links Keywords C3 Chemical Reactions 

Chemistry Objectives Ch. 12

14.3 Energy and Reactions.

Energy in Rxns & Potential Energy Diagrams

Potential Energy Diagrams

Energy Changes in Reactions

14.3 Energy and Reactions.

Bond Energy and Calculations

Unit 1: Reaction Kinetics

Energy changes in chemical reactions

Question 1 What is the name and symbol of the unit of energy used in energy problems? joule, J.

Introduction: What is energy?

Enthalpy (∆H).

The Law of Mass Conservation & Energy in Reactions

What is a catalyst and what can they be used for?

14.3 Energy and Reactions.

Exothermic & Endothermic Reactions: Energy Diagrams

Potential Energy Diagrams

Student Presentations

Endothermic Vs. Exothermic Reaction Graphs

Drill # 7 (4B) 4/24/13 List 5 factors that affect reaction rate:

Energy and Chemical Changes

Bell Work: Kinetics Intro

Aim: How to represent the energy change in a system?

Potential Energy Diagrams

Potential Energy and Kinetics

2.2 Energy- the ability to do work

This is an endothermic reaction

Potential Energy Diagrams

14.2 Energy and Chemical Reactions

Presentation transcript:

Review Activation Energy Diagrams and Rate Laws

Which of the letters a–f in the diagram represents the potential energy of the products?

Which letter indicates the potential energy of the activated complex?

Which letter indicates the potential energy of the reactants?

Which letter indicates the activation energy?

Is the reaction exothermic or endothermic?

What letter represents the overall change in energy of the reaction?

What is the potential energy of the reactants?

What is the potential energy of the products?

What is the activation energy?

What is the overall change in energy of the reaction?

Is this reaction endothermic or exothermic?

What does the red line tell you about the reaction?

Draw an energy diagram for the reaction. (remember to label the axis) Potential energy of reactants = 350 KJ/mole Activation energy = 100 KJ/mole Potential energy of products = 250 KJ/mole

A + B  C Trial [A] [B] Rate 1 0.0400 0.0800 39 2 78 3 0.0100 156 Determine the rate law for the reaction.