Part 7
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what is the difference between ionic equation and net ionic equation?
net ionic does not include spectator ions, wheres ionic equation does!
whats the difference between a molecular equation and ionic equation?
ionic equation is composed of ions in solution ; molecular formula includes bonded molecules/compounds
neutralization rxn are a type of what?
double displacement rxn
when balancing equations who should be saved for last?
oxygen and hydrogen (usually the most represented in rxn)
what is true about rate law if you are provided with the RATE-DETERMINING step?
the exponents are equal to the coefficients (onlyyy of the rate-determining step!) not entire rxn!
if delta G is negative then the rxn is what?
spontaneous
if delta G is positive then the rxn is what?
not spontaneous
what does it mean if delta G is zero?
rxn is at equilibrium & thus, delta H= (T)(delta S)
water boiling is an endo/exo- thermic rxn?
endothermic… bonds are being broken, energy is absorbed, and delta H is positive
under what conditions do gases deviate from ideal conditions?
low pressure, high temp
under what conditions are gases most soluble?
high pressure, low temp
what formula is used to calculate heat absorbed or released in rxn?
q= MCAT heat= massspecific heatdelta T
what is a state function?
a property that does not depend on mechanism of change.. just before and after (enthalpy, entropy, free energy)
if you increase the concentration of reactants, what happens to rxn rate?
it increases all but zero order rxns
what happens to rxn rate if you increase temp?
rxn rate increase
true or false: transition states (top of potential energy diagram) has greater energy than either the reactants or products.
true … TS is where old bonds are weakened and new bonds are preparing/beginning to form
on a potential energy diagram, if the products are LOWER than the reactants the rxn is what?
exothermic (-delta H)
on a potential energy diagram, if the products are HIGHER than the reactants then the rxn is what?
endothermic (+ delta H)
what is the second law of thermodynamics?
all spontaneous reactions result in an increase in entropy
what is the gibbs free energy equation?
AG = AH - TAS