Order of Reactions

The rate equation
Shows the relationshio between the rate of a chemical equation and the concentration of the reactants.
The order of reaction
With respect to a given reactant is the power of that reactants concentration in the rate equation.
Overall order of reaction
Is the sum of the powers of the reactant concnetrations in the rate equation.
What is K?
The rate constant of the reaction
The rate constant
Is the constant of proportionality in the rate euqation
What happens during a chemcial reaction?
The concentration of the reactants decreases and the concetration of the products increases.
Rate of reaction
Change in concentration of the reactants and products per unit time
How do you determine order of reaction?
Change in concetration (to the power of order of reaction) = change in rate
If the reaction is 1st order
Concentration doubles rate will double
Directly proportional
If the reaction is 2nd order
The concentration double the rate will quadruple
What is the rate determining step
The slowest step in a chemical reaction
If concentration of one of the reactants increase, the rate of reaction will increase. What about K?
Will not change
Preasure increases, the concentration of reactants will increase and rate of reaction will increase, what will happen to K?
Will not change
K constant is independant of
Concentration and pressure
The constant varies with…
Temperature, and the addition of the catalyst
Temperature increases. K constant?
Increase
Temperature decreases. K constant?
Decrease
If concentration or pressue is changed at constant temperature, the K constant will?
Not change
x

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