Multiple Choice
What is the equilibrium chemical equation for a 0.01 M solution of sodium acetate, NaC2H3O2(aq)?
16. Chemical Equilibrium
Equilibrium Constant K
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For the reaction A ⇌ B at equilibrium, if the concentration of A is 0.5 M and the concentration of B is 2.0 M, what is the value of the equilibrium constant Kc?
A
2.5
B
0.25
C
4.0
D
1.0
Verified step by step guidance1
Identify the balanced chemical equation for the reaction: A ⇌ B.
Understand that the equilibrium constant expression for this reaction is given by Kc = [B]/[A], where [B] and [A] are the equilibrium concentrations of B and A, respectively.
Substitute the given equilibrium concentrations into the Kc expression: [A] = 0.5 M and [B] = 2.0 M.
Set up the equation for Kc using the substituted values: Kc = (2.0 M) / (0.5 M).
Simplify the expression to find the value of Kc, which represents the ratio of the concentration of products to reactants at equilibrium.
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