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  1. AP Chemistry
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Equilibrium

Question 1
college-boardChemistryAPExam Style
1 mark

What is the term for the equilibrium state of a reaction when the rate of the forward reaction equals the rate of the reverse reaction?

Question 2
college-boardChemistryAPExam Style
1 mark

In a chemical reaction at equilibrium, if the concentration of reactants is increased, what happens to the rate of the forward reaction?

Question 3
college-boardChemistryAPExam Style
1 mark

Equilibrium can only occur in ____ systems.

Question 4
college-boardChemistryAPExam Style
1 mark

If acetone (CH3COCH3) and dimethyl ether (CH3OCH3) have almost identical molecular masses, why does acetone have a higher boiling point?

Question 5
college-boardChemistryAPExam Style
1 mark

If a reversible reaction at equilibrium experiences an increase in temperature, what happens to the value of its equilibrium constant (K) if it's endothermic?

Question 6
college-boardChemistryAPExam Style
1 mark

In the Haber process for synthesizing ammonia, N2(g) + 3H2(g) ⇌ 2NH3(g), what happens to the equilibrium position if the pressure is increased at constant temperature?

Question 7
college-boardChemistryAPExam Style
1 mark

Considering Le Chatelier’s Principle, which action would NOT affect Keq but would result in an increased production rate for C(s) if C(s)+D(g)<=>E(g)?

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Question 8
college-boardChemistryAPExam Style
1 mark

What happens when temperature decreases in endothermic reactions like HCOOH(l) ⇌ H+(aq) + HCOO−(aq)?

Question 9
college-boardChemistryAPExam Style
1 mark

Which of the following statements about the equilibrium constant, Kc, is true?

Question 10
college-boardChemistryAPExam Style
1 mark

When describing an equilibrium mixture, which phrase is correct?