Identify the equilibrium constant expression for the reaction so,(3) + NO,(3) = so,(g) +NO(g) given that the value of Ke for the reaction is 2.50. Choose one: Ο Α. [so3][NO] 2.50 = [so,][NO,] В. 2.50 = [so.][NO,] [so,][NO] (Pso,) (Pxo) (Pso,(Fso, OC. 2.50 = (Pso,)(Pxo) (Pso,)(Pxo,) O D. 2.50 = NO

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**Equilibrium Constant Expression for the Reaction**

**Reaction:**
\[ \text{SO}_2(g) + \text{NO}_2(g) \rightleftharpoons \text{SO}_3(g) + \text{NO}(g) \]

Given that the value of \( K_c \) for the reaction is 2.50, identify the equilibrium constant expression.

**Options:**

**A.**
\[ 2.50 = \frac{[\text{SO}_3][\text{NO}]}{[\text{SO}_2][\text{NO}_2]} \]

**B.** *(Correct Answer)*
\[ 2.50 = \frac{[\text{SO}_2][\text{NO}_2]}{[\text{SO}_3][\text{NO}]} \]

**C.**
\[ 2.50 = \frac{(P_{\text{SO}_3})^3(P_{\text{NO}})}{(P_{\text{SO}_2})^2(P_{\text{NO}_2})^2} \]

**D.**
\[ 2.50 = \frac{(P_{\text{SO}_3})(P_{\text{NO}})}{(P_{\text{SO}_2})(P_{\text{NO}_2})} \]

**Explanation:** 

The equilibrium constant expression is a ratio of the concentrations (or pressures) of the products to the reactants, each raised to the power of their coefficients in the balanced equation. Here, option B correctly represents the inverse concentration expression expected for a \( K_c \) value of 2.50 given the directions in the problem statement.
Transcribed Image Text:**Equilibrium Constant Expression for the Reaction** **Reaction:** \[ \text{SO}_2(g) + \text{NO}_2(g) \rightleftharpoons \text{SO}_3(g) + \text{NO}(g) \] Given that the value of \( K_c \) for the reaction is 2.50, identify the equilibrium constant expression. **Options:** **A.** \[ 2.50 = \frac{[\text{SO}_3][\text{NO}]}{[\text{SO}_2][\text{NO}_2]} \] **B.** *(Correct Answer)* \[ 2.50 = \frac{[\text{SO}_2][\text{NO}_2]}{[\text{SO}_3][\text{NO}]} \] **C.** \[ 2.50 = \frac{(P_{\text{SO}_3})^3(P_{\text{NO}})}{(P_{\text{SO}_2})^2(P_{\text{NO}_2})^2} \] **D.** \[ 2.50 = \frac{(P_{\text{SO}_3})(P_{\text{NO}})}{(P_{\text{SO}_2})(P_{\text{NO}_2})} \] **Explanation:** The equilibrium constant expression is a ratio of the concentrations (or pressures) of the products to the reactants, each raised to the power of their coefficients in the balanced equation. Here, option B correctly represents the inverse concentration expression expected for a \( K_c \) value of 2.50 given the directions in the problem statement.
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