11A.2 Flashcards
when is rate directly proportional to the concentration
rate = k{A}
what is the rate equation
it is an equation that represents the mathematical relationship between the rate of reaction and the concentration of the reactant
what is the k called in the rate equation
rate constant
every reaction has
- its own rate constant
- its own rate equation
when would rate constants change
they only change when the temperature changes
the orders of reaction are determined by
the order of the reactant ( {A)^2{B} 2+1=3 )
how can we represent zero order of reaction
zero order of reaction rate= k{A}^0 or rate = k
what is the order (of a reactant species)
the power to which the concentration of the species is raised in the rate equation
what is the overall order of a reaction
the sum of all the individual orders
what is Stoichiometry
Stoichiometry refers to the relationship between the quantities of reactants and products before, during, and following chemical reactions
why can’t we find a reaction mechanism using stoichiometric equations
because the mathematical relationship between the concentration of the reactants and the rate of reaction (ie the orders of reactions) cant be determined by it, it can only be determined by experiments
what is the rate-determining step
the slowest step in the mechanism for a reaction
the slowest step in the reaction
it determines the overall rate of the reaction
a reaction involing simultaneous collisions between more than two particles
very rare
what are the two explanations that A + B + C —–> D + E HAS a rate of the equation of K{A}{B}
1.
