Reaction Kinetics

what is the gibbs free energy equation

what is ΔG equal to

-change in enthalpy minuc energy req to drive entropy change

what must the value of ΔG be for a reaction to be spontaneous

-ΔG must be negative

can we tell the kinetics of a reaction from delta G

no

what can ror be changed by

-change of temp: more collisions

-reactant conc/ parital pressure

-addition of catalyst

how to calculate RoR

-calculate rate of change

how to find the initial ror from time conc graph

-tangent when t=o then find gradient

how to calc order of reaction from rate constant and rate

what does it mean if reactions is 0 order

-rate of reaction changes independently of reactant concentration

why are most catalysed reactions zero order

-reaction conc outweight conc of enzyme or catalyst present

-number of binding sited on enzymes is full

-ror depends on catalyst conc

what does it mean if a reaction is first order

-rate is proportional/linearly dependant to the conc of reactant

why do we use half life

-very difficult to get accurate measurement of initial rates

-half life is easier to measure

which order has a constant half life

1st order as it has exponential decay