Study Set Content:
the number of concentrations that determine rate.
Orders of reaction:
the way in which the concentration of the reactant influences the
rate
The rate of a reaction is proportional to the molar concentrations of the reactants each raised to power equal to the number of molecules undergoing reaction
Law of mass action
Order of reaction =
Sum of Exponents
Oder of A =
a
and B
b
Then overall order =
a+b
is one in which the rate is independent of the concentrations of the reactants.
Zero order
Rate constant (k) and t1/2 depend on
Co
is one where the rate of reaction is directly proportional to the concentration of one of the reactants.
First order
Zero order reaction units
mg/L/h
First order reaction units
1/h
Zero-order reaction half-life
t 1/2 = 0.5C/k
First-order reaction half -life
t 1/2 - 0.693/k
Constant half-life
First-Order reaction
not constant half-life
Zero-Order reaction
Is constant with respect to time
Zero-order reaction
Will change with respect to time as concentration changes
First-order
Rate constant with respect to time changes as the concentration changes
Zero-Order reaction
Rate constant remains constant with respect to time
First-order reaction
