AP Chemistrymediummcq1 pt
Doubling the volume of a gaseous equilibrium mixture does what?
A.Shifts toward the side with more gas moles
B.Shifts toward the side with fewer gas moles
C.Always shifts toward reactants
D.Changes K
Explanation
Core Concept
Expansion drops pressure, so the system responds by making more gas particles — shifting toward the larger mole count (if the sides differ).
Correct Answer
AShifts toward the side with more gas moles
More Unit 7: Equilibrium practice questions
- hardWhich of these salts is most soluble?
- easyFor the reaction A(g) + B(g) ⇌ C(g), an equilibrium mixture contains 0.20 M A, 0.10 M B, and 0.40 M C. What is Kc?
- easyHow does the equilibrium constant for a reaction change when a catalyst is added?
- hardA mixture initially contains 2.0 M A. For 2A ⇌ B with K = 0.10, what is [B] at equilibrium (approximately)?
- hardThe equilibrium constant for a reaction is unitless. Why?
Practice more AP Chemistry questions with full explanations
Practice Unit 7: Equilibrium Questions →