Reaction Rates 1 3.2.2 Flashcards
What can affects the rate of reaction?
Temperature Pressure Cataylst Concentration Surface Area
How does Temperature affect the rate of reaction?
At higher temperatures more molecules will have the activation energy
How does a Catalyst affec tthe rate of reaction?
It lowers the activation energy by offering an alternative path way
How does Surface Area affect the rate of reaction?
A large surface area increases the number of collisions
How does Pressure and Concentration affect the rate of reaction?
A higher pressure and concentration means that more collisions take place due to the increaed quantity of molecules in the sae volume
What is used to represent the Kinetic Energy of molecules in a substance?
Maxwell-Boltzmann Distribution
How does a Higher Temperature and catalyst affect the Maxwell-Boltzmann Distribution?
Temperature flattens the curve and spreads it across a large portion of the X axis
Catalyst moves the activation energy to the left as it is lower
What is the definition of a Catalyst?
A substance which increases the rate of reaction without being consumed.
This is done by offering an alternative path of reaction
What are benefits of using a Catalyst?
Lowers opperating temperature.
Therfore using less energy.
Therfore creating less CO2 in energy production
What are negatives of using a Catalyst?
Can be expensive
Can be toxic
some reaction don’t have a catalyst
What are the two tyoes of Catalyst?
Hetrogeneous
Catalyst and reactants are in different phases
Homegeneous
Catalyst and reactants are in the same phase
