Transcript 1 - Revsworld

Chemistry, The Central Science, 11th edition
Theodore L. Brown, H. Eugene LeMay, Jr.,
Bruce E. Bursten,
and Catherine J. Murphy
Chapter 15
Chemical Equilibrium
Dana & Michelle Chatellier
University of Delaware
© Copyright 2009, Pearson Education
When a reaction is at a state of
equilibrium, the rate of the
forward reaction __________
the rate of the reverse reaction.
a.
b.
c.
d.
is equal to
is slower than
is faster than
is the reverse of
When a reaction is at a state of
equilibrium, the rate of the
forward reaction __________
the rate of the reverse reaction.
a.
b.
c.
d.
is equal to
is slower than
is faster than
is the reverse of
At equilibrium, the equilibrium
constant is equal to:
a.
b.
c.
d.
[reactants]/[products]
[products]/[reactants]
[reactants] x [products]
[reactants] + [products]
At equilibrium, the equilibrium
constant is equal to:
a.
b.
c.
d.
[reactants]/[products]
[products]/[reactants]
[reactants] x [products]
[reactants] + [products]
A large value of the equilibrium
constant indicates that when the
reaction reaches equilibrium,
mostly ______ will be present.
a.
b.
c.
d.
reactants
products
catalysts
shrapnel
A large value of the equilibrium
constant indicates that when the
reaction reaches equilibrium,
mostly ______ will be present.
a.
b.
c.
d.
reactants
products
catalysts
shrapnel
When equilibrium is achieved:
a.
b.
c.
d.
Q>K
Q<K
Q=K
Q2 = K
When equilibrium is achieved:
a.
b.
c.
d.
Q>K
Q<K
Q=K
Q2 = K
CO2 + H2  CO + H2O
If all species are gases and H2 is
added, the amount of CO
present at equilibrium will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If all species are gases and H2 is
added, the amount of CO
present at equilibrium will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If all species are gases and H2O
is added, the amount of CO
present at equilibrium will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If all species are gases and H2O
is added, the amount of CO
present at equilibrium will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If all species are gases and CO2
is removed, the amount of CO
present at equilibrium will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If all species are gases and CO2
is removed, the amount of CO
present at equilibrium will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If the reaction is endothermic
and the temperature is raised,
the amount of CO present will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If the reaction is endothermic
and the temperature is raised,
the amount of CO present will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If all species are gases and the
container is compressed, the
amount of CO present will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If all species are gases and the
container is compressed, the
amount of CO present will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If a catalyst is added to the
equilibrium, the amount of CO
present will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.
CO2 + H2  CO + H2O
If a catalyst is added to the
equilibrium, the amount of CO
present will:
a.
b.
c.
d.
increase.
decrease.
remain unchanged.
disappear.