CHE 132 Exam III review Questions And
Already Passed Answers(2025-2026)
Updated.
K<<<1 - Answer reaction favors reactants and lies to the left.
K~1 - Answer reaction favors neither reactants nor products and lies at the center.
K>>>1 - Answer reaction favors products and reaction lies to the right.
Types of disturbances - Answer concentration changes, volume (pressure) changes, and
temperature changes
decrease concentration of a product... - Answer shift right
increase concentration of a product... - Answer shift left
decrease concentration of a reactant... - Answer shift left
increase concentration of a reactant... - Answer shift right
volume decreases - Answer system shifts toward side with fewer moles
volume increases - Answer system shifts toward side with more moles
pressure increases - Answer system shifts toward side with fewer moles
if rxn has the same number of moles of gas on each side - Answer no change upon volume
change
add an inert gas at a fixed volume - Answer no change
, endothermic, temperature increases - Answer rxn shifts right (K increases)
endothermic, temperature decreases - Answer rxn shifts left (K decreases)
equilibrium constant - Answer [products]/[reactants]
what is not included in equilibrium constants? - Answer pure liquids and solids
Express the equilibrium constant for the following reaction.
2 K(s) + 2 H2O(l) ↔ 2 KOH(aq) + H2(g) - Answer K = [H2][KOH]2
Ammonia can be produced via the chemical reaction
N2(g)+3H2(g)⇌2NH3(g)
During the production process, the production engineer determines the reaction quotient to be
Q = 3.56×10−4. If K = 6.02×10−2, what can be said about the reaction? - Answer The reaction
is not at equilibrium and will proceed to the right.
For the reaction
aA+bB⇌cC+dD - Answer Q=[C]c[D]d/[A]a[B]b
under any conditions. The value of Q is equal to K only at equilibrium.
The reaction
2CH4(g)⇌C2H2(g)+3H2(g)
has an equilibrium constant of K = 0.154.
If 6.55 mol of CH4, 4.30 mol of C2H2, and 10.00 mol of H2 are added to a reaction vessel with a
volume of 6.00 L , what net reaction will occur? - Answer The reaction will proceed to the left
to establish equilibrium.
For the reaction
aA+bB⇌cC+dD - Answer Kc=[C]c[D]d/[A]a[B]b
Already Passed Answers(2025-2026)
Updated.
K<<<1 - Answer reaction favors reactants and lies to the left.
K~1 - Answer reaction favors neither reactants nor products and lies at the center.
K>>>1 - Answer reaction favors products and reaction lies to the right.
Types of disturbances - Answer concentration changes, volume (pressure) changes, and
temperature changes
decrease concentration of a product... - Answer shift right
increase concentration of a product... - Answer shift left
decrease concentration of a reactant... - Answer shift left
increase concentration of a reactant... - Answer shift right
volume decreases - Answer system shifts toward side with fewer moles
volume increases - Answer system shifts toward side with more moles
pressure increases - Answer system shifts toward side with fewer moles
if rxn has the same number of moles of gas on each side - Answer no change upon volume
change
add an inert gas at a fixed volume - Answer no change
, endothermic, temperature increases - Answer rxn shifts right (K increases)
endothermic, temperature decreases - Answer rxn shifts left (K decreases)
equilibrium constant - Answer [products]/[reactants]
what is not included in equilibrium constants? - Answer pure liquids and solids
Express the equilibrium constant for the following reaction.
2 K(s) + 2 H2O(l) ↔ 2 KOH(aq) + H2(g) - Answer K = [H2][KOH]2
Ammonia can be produced via the chemical reaction
N2(g)+3H2(g)⇌2NH3(g)
During the production process, the production engineer determines the reaction quotient to be
Q = 3.56×10−4. If K = 6.02×10−2, what can be said about the reaction? - Answer The reaction
is not at equilibrium and will proceed to the right.
For the reaction
aA+bB⇌cC+dD - Answer Q=[C]c[D]d/[A]a[B]b
under any conditions. The value of Q is equal to K only at equilibrium.
The reaction
2CH4(g)⇌C2H2(g)+3H2(g)
has an equilibrium constant of K = 0.154.
If 6.55 mol of CH4, 4.30 mol of C2H2, and 10.00 mol of H2 are added to a reaction vessel with a
volume of 6.00 L , what net reaction will occur? - Answer The reaction will proceed to the left
to establish equilibrium.
For the reaction
aA+bB⇌cC+dD - Answer Kc=[C]c[D]d/[A]a[B]b
