Содержание
- 2. Contents 1. Understanding of Rate of Reaction 2. Factors Affecting Rate of Reaction 3. Collision Theory
- 3. Chemical reactions require varying lengths of time for completion, depending on the characteristics of the reactants
- 4. Chemical kinetics is the study of the speed with which a chemical reaction occurs and the
- 5. During chemical reaction, reactants are consumed, products are formed. Amount of reactants decreases↓, amount of product
- 6. mol/м3⋅s mol/м2⋅s mol/l⋅s THE RATE OF CHEMICAL REACTION HOMOGENEUOS REACTION RATE is the change moles of
- 7. FACTORS AFFECTING THE REACTION RATE: Nature of the reactant (gas, liquid or solid) Surface area Concentration
- 8. Nature of the reactant and products In organic reaction a large number of bonds are broken
- 9. HOW SURFACE AREA AFFECTS THE RATE OF REACTION? CaCO3(s)+2HCl(ℓ) → CaCl2(s)+H2O(ℓ)+CO2(g) marble piece marble powder HCl
- 10. LAW OF MASS ACTION At constant temperature, the rate of a chemical reaction is directly proportional
- 11. Homogeneous reactions which occur in one phase only. It may be a gaseous phase or a
- 12. THE EFFECT OF TEMPERATURE ON REACTION RATE described by principle of Vant Hoff “In the temperature
- 13. Why does increased temperature increase the rate of reaction? At a higher temperature, particles have more
- 14. The rate of a reaction depends on the temperature at which it is run. As the
- 15. DETERMINE THE ACTIVATION ENERGY Еа > 100 kJ – big value, the reaction proceeds very slowly
- 16. CHEMICAL EQUILIBRIUM The irreversible reaction moves in one direction only from reactant to product: The reversible
- 17. "At a given temperature, the product of concentrations of the reaction product each raised to the
- 18. 0 106 10-6 Reversible reaction Irreversible reaction No reaction occurs Value of chemical equilibrium constant
- 19. HOMOGENEOUS REACTION HETEROGENEOUS REACTION
- 20. The most important condition for the equilibrium is that ΔG of the reaction should be 0.
- 21. CONDITIONS THAT AFFECT THE EQUILIBRIUM The conditions that affect the equilibrium are described according to Le
- 22. FACTORS AFFECTING EQUILIBRIUM Some of the factors which affect the equilibrium constant value are: 1. Concentration.
- 23. 3. Pressure. The pressure change affects only on those systems where in at least one of
- 24. CATALYST A catalyst will change the rate of reaction. A catalyst only changes the rate of
- 25. Catalysts are substances that change the rate of a reaction without itself being consumed. Catalysts never
- 26. QUIZ ME NEXT 1 What is the discipline that studies chemical reactions with respect to reaction
- 27. QUIZ ME NEXT 2 What drives chemical reactions? Electrons Physical conditions Energy Activation Energy
- 28. QUIZ ME NEXT 3 Which one of the following reactions reacts the most rapidly at room
- 30. Скачать презентацию