FUNCHEM 19 Molecularities of Reactions Mechanisms and Arrhenius Equation

What is a reaction mechanism?

Reaction Mechanism is a sequence of elementary steps that leads to product formation

What is an elementary step?

Elementary step is each individual step in the overall reaction.

What is Molecularity?

Molecularity tells you the number of molecules reacting in each individual step

What is the one Arrhenius Equation

What is another Arrhenius Equation

What does the letters mean in Arrhenius equation?

k= rate constant

A= frequency aactor

e= exponential

Ea= exponential activation energy

R= gas constant

T= Temperature in Kelvin

What is the graphical form of the Arrhenius Equation?

y=mx+c

How do you find the activation energy using the Arrhenius equation in the graph

Plot the natural logarithm of the rate constant (ln(k)) on the y-axis against the reciprocal of temperature (1/T) on the x-axis

The result is a straight line where the slope (m) is equal to
-Ea/R, where (R) is the ideal gas constant

Calculate the slope of this line and then use the formula
(Ea = -m x R) to determine the activation energy