Lecture 26: Addition Reactions and Chemical Kinetics
- Takes place on a double bond
- Electrophile to CC
Reaction Rates - Measure how quickly they proceed in a given time. The speed of a chemical reaction is usually reported as its change in concentration (molarity) over time, molarity per second (M/s)
Average rate of appearance of
Average Rate of Disappearance of
- Decreases and converts to
Relative Reaction Rate Equations -
Rate of reaction decreases as the reaction proceeds because as the reaction proceeds, the amount of reactants decreases.
Overall Equation - For reaction:
Relationship between the rate and specific concentration is presented by the reaction order of a particular substance.
If doubling the concentration of one reactant Rate doubles
First order Reaction
If doubling the concentration and the rate quadruples
Reaction is Second Order
If it doesn't effect the rate, it is zero order
The overall Reaction order is the sum of the orders from the individual reactants if a reaction is first order with respect to each reaction it is overall second order
order with respect to
Not the coefficient from the equation. is expressed
Initial Rates Data - Experimental technique to find by changing the initial concentrations of one reactant at a time then we can see the effect of one reactants concentration on the rate.
rate constant (units)
First Order -
Second Order -
ZERO Order -