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36 Cards in this Set

  • Front
  • Back
nitrogen oxide
nitrogen oxide is a pollutant that contributes to . . .
the formation of ozone and smog at the lower levels of the atmosphere
how is nitrogen oxide formed (give me that motherlovin equation)
n2(g) + o2(g)<=>2NO(g)
the equilibrium constant is
a measure of the extent to which a reaction proceeds or how much product is formed
equilibrium constant is symbolized by
the amount of nitrous oxide that forms depends on
starting concentrations of reactants

equilibrium constant associated w/ reaction
at low temps,
the relative amount of NO formed is negligible because Keq is very small
equilibrium constant for formation of nitrous oxide increases significantly within
the internal combustion engine of a car
what's Keq at 25*C?
what's Keq inside a car engine, at temps of >1000*C
~10^-6 to 10^-1
nitrogen and oxygen react to a much greater extent at
high temps
an arrow pointing to the right in a chemical reaction indicates that
all of the reactant A molecules will be converted into product B molecules, and reaction will go to completion
chemical equilibrium
the state where the concentrations of products and reactants are no longer changing
equilibrium is denoted by
that forward reverse arrow thing

reactant-favored equilibrium
more A exists than B
product-favored equilibrium
more B exists than A
the easiest way to communicate the position of the equilibrium is with an
equilibrium constant
an equilibrium constant is defined as
the ratio of products to reactants at equilibrium
large equilibrium constants are indicative of
product-favored reactions
small equilibrium constants are indicative of
reactant-favored reactions
the equilibrium constant can be thought of as a measure of
the extent to which a reaction proceeds
k_(A->B) [A]eq
rate_rev =
k_(B->A) [B]eq
equilibrium is reached when (equation)
k_(A->B)[A]eq = k_(B->A)[B]eq
ratio of the rate constants can be expressed as
k_(A->B)/k_(B->A) = [B]eq/[A]eq
the equilibrium constant can be calculated as . . .
the rate constants for the forward and the reverse reactions are . . .
temperature dependent
equilibrium constants vary with
the extent to which a reaction occurs is independent of
time required to reach equilibrium
what are we using to represent chemical molecules
each reactino will begin with all dice representing
reactant molecules
each experiment finishes when
the system reaches equilibrium
1 plastic bag with 20 dice
how many rolls are we doing for each experiment
how many experiments are we doing