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law of convo of energy
what is enthalpy
showing enthalpy in exo and endo reactions ( diagram and 2 equations)
energy to mole ratio
know that when finding enthal[y of 3 sates of matter then use deltaH(vap) or (cond) or melt
5.2
finding enthalpy q=mcdeltaT -> absorbed
4.184 water heat capacity
Qsol=-Qrxn
coffee cup calorimeter
hess law of heat summation- only initial condecton ( reactants) and final (products) matter
combineing chem equatons ( remember that when you simplyfiy end product the u have to do the same to energy)
finding enthalpy using formation reactions (delta)H= sum(n(delta)Hf products - reactants) (pure element =0)
estimate enthaply using bonds broken-bonds formed
6.1
rate=concentration over time use [] to show concentration
avg rate= final con-initial/time (avg change in concentration)
instantaneous= use tanget line - finds rate of reaction
ratio of rates
methods of measuring rates
6.2
rate equation, orders, rate constant,
half life
collision theory: in order for a reaction to occur reacting particles must collide
1) correct orientation
2) suffiecent collision energy
potiential energy diagram stuff, activation energy, transition state,
know changes in diff stuff do what thiings to graph
6.4
reaction mechanism-sires of steps to make the reaction
elementary reaction- single molecular event
elements that are used then die off are reaction intermediates
rate determining step is slowest step
rate equation stuff
catalyst lowers activation energy and 2 bumps
homogeneous catalyst exist in the same phase as the reactants
hetro is not
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