Notes taken during lecture
NB. 201LM – lab prep on Wednesday 12  2
LECTURE 7 – Kinetics
Slide No. Notes
1how much product is formed
how much reactant disappears
2) actual ratio of reactant to product once reaction appears to stop
3)
2nothing to do with energy – kinetics
spontaneous because of thermodynamics
kinetics deals with how long it takes
3atmospheric chemistry – ozone depletion
biochemistry – medicines
archaeology – carbon dating
the more we understand of kinetics, more control over processes –
industrial reactions preferred to be fast – also slow down food
decomposition, aging
4more concentrated, more likely to collide earlier
more surface area, faster/more vigorous reaction
temperature
5red line = conc of A decreasing; green line – B conc increasing
disappearance of reactant or appearance of B
note negative sign
6 need to take into consideration coefficients
7Ans: B
Ans2: D
8note negative sign in average rate equation
9these are instantaneous rates
note that all three are same values
rate of reaction should be same for all reactants and products
do not matter which product or reactant examined, as long as
coefficients taken into consideration
LATER on, slope smaller, so reaction slows down
10 how rate changes with concentration
capitals are species of reaction; noncapitals are coefficients
double rate of N2O5, double rate of reaction – rate is proportional to
concentration
exponent = order of reaction

11 overall reaction order = sum of all exponents
Ans1: C
EX2.
double conc of A = increasing rate of reaction by four
www.notesolution.com
Document Summary
201lm lab prep on wednesday 12  2. More concentrated, more likely to collide earlier. More surface area, faster/more vigorous reaction temperature red line = conc of a decreasing; green line b conc increasing disappearance of reactant or appearance of b note negative sign. Ex2. double conc of a = increasing rate of reaction by four www. notesolution. com. Halve conc of b = halve rate of reaction. Therefore ans2: c vary the initial concentration of one reactant at a time set of experiments to measure rate and pick it apart by seeing how it is affected by different reactant concentrations. Initially, there is no back reaction > no products, so products cannot produce reactants and mess up concentrations compare 1 and 2: clo2 differs, so the difference between the experiments" initial rates is due to the clo2. Clo2 first order: both initial conc and initial rate increase by 4, therefore onetoone therefore ans1: b.