Kinetics Chapter 19 Kinetics (chemistry) Branch of chemistry that investigates the rates of...
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Transcript of Kinetics Chapter 19 Kinetics (chemistry) Branch of chemistry that investigates the rates of...
Kinetics
Chapter 19
Kinetics (chemistry)
Branch of chemistry that investigates the rates of chemical reactions.
Reactions result from the collision of particles: ions, molecules, atoms.
Review
What are the 6 types of reactions?
6 Types of Reactions
CombustionDecompositionSynthesisSingle displacementDouble displacementAcid base reaction
Collision Theory
Collision Theory
Activation Energy
The energy required for a reaction to proceed
Results in the formation of a transition state.
Factors that affect reaction rate
TemperatureConcentrationParticle sizeCatalyst
Increase in Temperature:increases the speed
of particlesincreases the
number of collisionsincreases the energy
of the collisions
An Increase in Concentration Increases:
the number of collisions
the likelihood of collisions with sufficient energy
the likelihood the collisions with have enough energy
Particle Size
Decreasing the particle size increases the surface area to volume ratio
More surface area, the faster the reaction
CatalystCatalyst provide a
surface area for a reaction to occur.
By orienting the particles to the correct position, reaction requires less energy to proceed.
Lower activation energy, faster reaction
Catalyst
By orienting the particles for a more efficient collision the activation energy is reduced allowing the reaction to proceed faster