Last topic in Kinetics

Ms. K discussed our last topic in Kinetics and she gave us a hand out of our review sheet.
Rate law
It is an expression which relates the rate of a reaction to the concentration of the reactants.It helps us to calculate the rate of a reaction with the given concentrations of reactants.
A--->products
Rate=-ΔA/Δt
*rate of consumption a is directly proportional to its concentration,the faster a is consumed the lower its concentration.

formula: Rate=k[A]^x
where in:
k is the constant of proportionality
A is the concentration of A
x is the power,called the order of the reaction
*rate constant can only be determined experimentally
*the rate constant is specific for each reaction at a specific temperature,since its value depends upon the size, speed and types of molecules in the reaction
*TEMPERATURE is the only factor that affects the rate constant
REACTION ORDER
The order of reaction indicates how concentration of reactants affects the rate of reaction.
In a first order reaction, if the concentration of A were doubled, the rate would be doubled.If the concentration were tripled,the rate would be tripled.
Ex.
rate= k[A]²[B]³ then the overall order is 5

CALCULATING RATE ORDERS
The rate law can only be determined experimentally.Even the rate of formation of the products and the rate of consumption of reactants is related to their stoichiometry,the law cannot usually be determined from the molar coefficent.

RATE LAW AND STOICHIOMETRY
(base it on your copy,not that hard eniweys)

RATE LAW AND REACTION MECHANISM
(even this one we did this one already)
***Reminder: We will be having our test on wednesday and don't forget to answer the review sheet ok??!!!.
the next scribe would be sergio