AP Chemistry Unit 5 Vocab

Front

reaction rate equation

Back

a formula that connects the speed of a chemical reaction with the concentration of its reactants

Rate = k[A]^m[B]ⁿ

Front

order of reactant

Back

The power to which the reactant's concentration is raised in the rate-law expression.

Front

overall reaction order

Back

the sum of all the exponents in a rate law expression

Rate = k[A]²[B]

Overall order = 2 + 1 = 3

Front

rate constant

Back

a constant of proportionality between the reaction rate and the concentrations of reactants that appear in the rate law (i.e., a constant created to hide the other factors that impact reaction rate, such as temperature)

Front

0th order reaction

Back

Reaction rate is independent of the [reactant]; 2x [reactant] --> no change in rxn rate

Front

1st order reaction

Back

Reaction rate is directly proportional to concentration of reactant [R]; 2x [R] --> reaction rate doubles rate=k[A]

Front

2nd order reaction

Back

The concentration of a reactant is raised to the second power. If the concentration doubles, the rate is multiplied by 4. If the concentration is tripled, the rate increases 9x

Front

rate law equation

Back

rate = k [A]^x [B]^y

Front

half-life

Back

The time required for one half of the atoms of a radioisotope to decay

Front

Half life and rate of decay

Back

t_1/2 = 0.693/k