The Rate & Extent Of Chenical Change Flashcards
What is a drawback of using fast reaction rates in industry?
Cost
Safety concerns
What is collision theory?
Collision theory explains how reactions happen and why they happen at different rates.
What does collision theory say the minimum requirements are for a reaction to happen?
1) Particles must collide
2) The energy of particles must exceed the activation energy
What are the main factors that affect the rate of chemical reactions?
- Concentration of dissolved reactants
- Pressure of gas reactants
- Temperature
- Surface area of solid reactants
- Catalysts
Why does the use of catalysts in industry benefit the environment?
Reduces burning of fossil fuels.
What are the effects of increasing the temperature of a chemical reaction?
- Increased energy of reactant particles.
- Increased rate of reactions.
- Increased frequency of collisions.
What are the consequences of catalysts not being used up?
They can be reused indefinitely.
They are not found in chemical equations.
What is the disadvantage of using catalysts in industry?
Many catalysts are toxic
How do reversible reactions work?
Chemical reactions that proceed in both forward and backward direction (products can be made back to the reactants)
What is a dynamic equilibrium?
When both the rates of the forwards and backward reactions are equal.
What is the Le Chatelier’s principle?
If any of the conditions of a reversible reaction at equilibrium are changed, the closed system will adopt to counteract whatever has changed.
