AP Chemistry
7.7 Calculating Equilibrium Concentrations
7.4 Calculating the Equilibrium Constant
7.3 Reaction Quotient and Equilibrium Constant
A student investigates the reaction between two gases, \(\text{A}(g)\) and \(\text{B}(g)\), that react to form \(\text{C}(g)\) in a rigid \(1.0\text{ L}\) container at a constant temperature according to the following equation:
\[ a\,\text{A}(g) + \text{B}(g) \rightleftharpoons c\,\text{C}(g) \]
The student introduces initial amounts of \(\text{A}(g)\) and \(\text{B}(g)\) into the container and measures the equilibrium concentrations of all species, recording the data in the table below.
Based on the data in the table, what is the value of the equilibrium constant, \(K_c\), for the reaction?
\[ a\,\text{A}(g) + \text{B}(g) \rightleftharpoons c\,\text{C}(g) \]
The student introduces initial amounts of \(\text{A}(g)\) and \(\text{B}(g)\) into the container and measures the equilibrium concentrations of all species, recording the data in the table below.
| Species | Initial concentration (\(\text{M}\)) | Equilibrium concentration (\(\text{M}\)) |
|---|---|---|
| \(\text{A}(g)\) | \(0.60\) | \(0.20\) |
| \(\text{B}(g)\) | \(0.40\) | \(0.20\) |
| \(\text{C}(g)\) | \(0.00\) | \(0.40\) |
Based on the data in the table, what is the value of the equilibrium constant, \(K_c\), for the reaction?
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