Unit 14: Kinetics Flashcards
Kinetics
The rate of chemical reactions
Collision theory
Molecules must collide to react
How to increase rate per collision theory
-control speed
-force
-correct orientation
-number of collisions
Factors that impact rate
-concentration
-temperature
-surface area of a substance
-pressure
-catalyst
What do catalyst impact?
Activation energy
What do catalysts not impact?
-change in heat
-Potential energy reactions/products
What scenarios give the fastest rate?
-high concentration
-high temperature
What does pressure do?
-only relates to gasses
-raises pressure
-raises rate
What does a catalyst do?
-lowers activation energy required for a reaction
-provides an alternate reaction pathway
How does temperature affect reactions?
-raises the rate
-raises the quantity/force/speed
What is concentration represented by?
Capitalized C
What is the molarity formula?
Moles of solute / liters of solution
In order to produce a reaction, the molecules that collide must…
-have enough energy
-have the proper orientation
Enthalpy
The heat released or absorbed in a chemical reaction
Entropy
The measurement of randomness or disorder in a system
Caliometry
The science associated with determining the changes in energy of a system
The measure of the average kinetic energy of particles in a sample
Temperature
