Apentix/AP Chemistry/Unit 7: Equilibrium/Question
AP Chemistryeasymcq1 pt

A reaction has K = 0.85 at a given temperature. What best describes the equilibrium mixture?

A.Appreciable amounts of both reactants and products are present
B.Essentially only products are present
C.Essentially only reactants are present
D.No reaction takes place in either direction

Explanation

Core Concept

Values of K near 1 mean neither side of the equation overwhelms the other. With K = 0.85 the products slightly trail reactants in the mass-action ratio, but only modestly. Both directions keep reacting briskly at matching rates once equilibrium arrives. Only K values many orders of magnitude from 1 signal a one-sided mixture.

Correct Answer

AAppreciable amounts of both reactants and products are present

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