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chemistry test 5a

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kw= ____at ___ degress c
H+OH-=10-14, 25
H+ increases then OH-___
decreases
H+ decreases then OH-___
increases
K=
equilibrium constant
Ksp=
solubility product constant
kw=
"ion" product constant for water
in a neutral solition or pure h20=
H+=OH-=10-7
in an acidic solution
H+>OH-
in a basic solution
H+<OH-
in all cases:
H+OH-=10-14 at 25 c
if the ph changes by factor 1,2,3,4
10,100, 1000, 10,000
a ___ solution resists a change in its ph when an ______ or a ____is added into to
buffered, acid, base
"Le chateliers principle" when a change is imposed on a system at equilibrium, the position of the equilibrium ___ in a ____ that ____ the effect of that change
shifts, direction, reduces
an equilibrium that ____ some molecules/atoms on the left side shifts to the RIGHT and ___ some molecules atoms on the right
consumes, produces
an equilibrium that ____ some molecules/atoms on the left side shifts to the LEFT and ___ some molecules atoms on the right
produces, consumes
If a chem rxn can occur in either direction they are called___ and indicated by using____
reversible, arrows
A chemical equilibrium is when the rate of the forward reaction= the concentration of all the reactants and products remain____
reverse
A chemical equilibrium the ______ of all reactants and products remain ____
concentration,constant
When a solution becomes ____ the rate of the forward dissolving reaction= the rate of the reverse reaction re-forming the solid
saturated
The concentration of ___ and liquids don't change so they ____included in the equilibrium expression
solids, are not
A value of k _____ than _____ means that at equilibrium, the reaction system will consist mostly of____or the equilibrium lies to the ___ _______value of k means that at equilibrium, the reaction system will consist mostly of ___or the equilibrium lies to the _____
much larger, 1, products, right, a very small, reactants, left
to determine the # of significant figures when calculating ___ or ____ you count _____ in the ____ or ____ number
logs, anti logs,decimal places, pH,pOH
when the volume is decreased on a system @ equilibrium, the position of the equilibrium ___ in a direction the ____ the # of ___ molecules so the space between each ___molecule becomes____
shifts, reduces, gas, gas, larger
when the volume is increased on a system @ equilibrium, the position of the equilibrium ___ in a direction the ____ the # of ___ molecules so the space between each ___molecule becomes____
shifts, increases, gas, gas, less
Common strong acids:
H2SO4=
HCl=
HNO3=
common weak acid: HC2H3O2 is _____
sulfuric acid, hydrochloric acid, nitric acid, acetic acid
common strong base: NaOH
sodium hydroxide