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Quiz 3

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MDCAT Practice Test - Practice Test - Chemistry - Chemical Equilibrium Quiz

Attempt 10 MCQs on MDCAT Practice Test - Practice Test - Chemistry - Chemical Equilibrium | Quiz 3

21. How does increasing temperature affect Kc for an exothermic reaction?

Decreases Kc
Increases Kc
No change
Kc becomes zero

22. How does increasing temperature affect Kc for an endothermic reaction?

Increases Kc
Decreases Kc
No change
Kc doubles

23. What is the relationship between ΔG° and K?

ΔG° = -RT ln K
ΔG° = RT ln K
ΔG° = -RT/K
ΔG° = -K/RT

24. If ΔG° is negative, what can be said about K?

K > 1
K < 1
K = 1
K = 0

25. What is the equilibrium constant expression for CaCO3(s) <=> CaO(s) + CO2(g)?

[CO2]
[CaO][CO2]/[CaCO3]
[CaO][CO2]
1/[CO2]

26. What does Le Chatelier's principle state?

Shifts to counteract the change
Shifts to amplify the change
Remains unchanged
Reaction stops

27. When you add more reactant to an equilibrium mixture, which way does it shift?

Toward products
Toward reactants
No shift
Reaction stops

28. If you remove product from an equilibrium mixture, which direction shifts?

Toward products
Toward reactants
No shift
Reaction stops

29. When pressure is increased, equilibrium shifts to the side with:

Fewer gas moles
More gas moles
Same gas moles
No shift

30. Which direction does increased pressure shift the Haber process?

Right
Left
No shift
Depends on temperature

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