CHEM 120 Chapter Notes - Chapter 14: Chymotrypsin, Hydrogenation, Rate-Determining Step

• School: McGill University
• Department: Chemistry
• Course: CHEM 120
• Professor: Laura Pavelka

Document Summary

Chapter 14: kinetics -rates and mechanisms of chemical reactions. 14. 2 expressing the reaction rate: rate: a change in some variable per unit time, reaction rate: change in concentrations of reactants (or products) as a function of time, reactant concentrations decrease while product concentrations increase. +12 +3: negative sign because by convention reaction rate is + number, but since change in concentration is final-initial and conc a2 < conc a1, it is . [ ] indicate a concentration in mol/l rate = : if measure product concentrations to determine rate, conc b2 > conc b1 so change is , rate = + Types of reaction rates: average rate: over given period of time, is the slope of the line (change in [c] over total time) Instantaneous rate: shorter time period, rate at particular instant during reaction: slope of line tangent to curve at any point.