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Kinetics in chemical systems - Coggle Diagram
Kinetics in chemical systems
Activation energy
The critical amount of energy that the reacting particles must have to form the activated complex is called activation energy.
The amount of energy needed for particles to react and produce products
Collision theory
All the collision which meets the above requirements are called fruitful or effective collisions which results in product formation. while others are ineffective collisions
For the formation of products the particles must collide
Techniques of measuring
Rate of Reaction
Different techniques to measure rates
Measuring the volume of gas in a given unit time
Rates can be measured in any suitable unit of time
Measuring the change of gas in a given unit of time
Rate is a measure of change that happens in a given unit time
In general, rates can be measured in terms of amount of reactant used up per unit or amount of product formed per unit time
Rate of chemical reaction
The energy with which particle collides
Frequency of collisions between particles
Formation of products in a reaction can be explained in terms of collision theory.
If particles collide with less energy than the activation energy, they will not react. The particles will just bounce off each other.
Rate is the measure of a change that happens during a reaction in a given unit time
Factors
Pressure
Pressure affects the rate of reaction as it reduces the amount of the space the particles can move in making collisions more frequent therefore a faster reaction
Surface Area
If the surface area of a reactant is increased: more particles are exposed to the other reactant. there is a greater chance of particles colliding, which leads to more successful collisions per second. the rate of reaction increases.
Temperature
Heat gives particles kinetic energy which makes collisions more frequent therefore a faster reaction
Catalyst
Catalyst affect the rate of reaction by reducing the amount of activation energy needed to start a reaction OR finds an alternative reaction to make the reaction take place faster
Concentration of reactants
If the concentration of reactants is increased, there are more reactant particles moving together. There will be more collisions and so the reaction rate is increased. The higher the concentration of reactants, the faster the rate of a reaction will be.
Keywords
Product- Chemical made in the chemical reaction
Reactant- starting chemical for a chemical reaction
