Ch 12 PPt

the area of chemistry concerned with reaction rates and the sequence of steps by which reactions occur

• either hte increase in the concentration of hte product or the decrease in the concentration of a reactant per unit time
• Reactant--> product
• aA-->bB
• Rate= -(delta[A])/ (deltat)

a constant of proportionality between the reaction rate and the concentration of reactants

an equation that shows the dependence of the reaction rate on the concentration of each reactant

• must be determined by the experimet
• deduced from the stoichiometry of the reaction

the sum of hte powers to which all reactant concentrations appearing in the rate law are raised

• a) by inspection
• b) from the slope of a log (rate) vs. log[A] plot

• • aA+bB=cC+dD
  • Rate=R=k[A]^m[B]n
  • initial

first and second order or more

• reaction rate depends on the reacctant concentration raised to the first powre
• A--> products

• calculus
• integrated rate law

• ln[A] 
• time
• straight-line 
• slope
• -k

the time required for a reactant concentration to droop to one-half of its initial value