AFNS — AFNS Chemistry
Chemical Equilibrium
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#9 Le Chatelier principle:
A) System opposes imposed change
B) System accelerates change
C) No effect
D) Only catalyst
#10 Increasing concentration of reactant shifts:
A) Toward products
B) Toward reactants
C) No shift
D) Stops reaction
#11 Increasing pressure favors side with:
A) Fewer gas moles
B) More gas moles
C) No gases
D) Solids only
#12 Exothermic reaction K decreases when:
A) Temperature increased
B) Temperature decreased
C) Pressure increased
D) Volume increased
#13 Endothermic reaction favored by:
A) Higher temperature
B) Lower temperature
C) Only catalyst
D) Only pressure
#14 Catalyst at equilibrium:
A) Speeds both directions equally
B) Shifts equilibrium
C) Stops reaction
D) Changes K
#15 Equilibrium constant Kc uses:
A) Concentrations
B) Pressures only always
C) Masses
D) Volumes only
#16 Kp uses:
A) Partial pressures
B) Molarity only
C) Moles only in solid
D) Temperature
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