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7 Cards in this Set

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Rate Determining Step
Slowest step
reaction rate is determined by
1. how frequently reactant molecules collide
2.orientation of colliding molecules
3.energy
Exothermic Reaction
Energy of products is lower then energy of reactants, heat is released, H is negative
Endothermic reaction
Energy of products is higher then energy of reactants, heat is consumed, H is positive
Reaction rate rules
1. Lower Ea, faster reaction
2.Greater concentration of reactants, faster reaction
3. Higher temp., faster reaction
rate law
aA + bB --> cC + dD
rate = k [A]^x [B]^y
x - order of reaction with respect to A
y- order of reaction with respect to B
x+y = overall order of rxn
Can rate law be derived
NO, only EXPERIMENTALLY