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Consider the reversible reaction: 2 NaHSO 3 (s)  Na 2 SO 3 (s) + H 2 O(g) + SO 2 (g) ΔH > 0  What will be the mass action expression for this reaction?

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Presentation on theme: "Consider the reversible reaction: 2 NaHSO 3 (s)  Na 2 SO 3 (s) + H 2 O(g) + SO 2 (g) ΔH > 0  What will be the mass action expression for this reaction?"— Presentation transcript:

1 Consider the reversible reaction: 2 NaHSO 3 (s)  Na 2 SO 3 (s) + H 2 O(g) + SO 2 (g) ΔH > 0  What will be the mass action expression for this reaction?

2 Consider the reversible reaction: 2 NaHSO 3 (s)  Na 2 SO 3 (s) + H 2 O(g) + SO 2 (g) ΔH > 0  What will be the mass action expression for this reaction?  How will the position of equilibrium be affected by the following changes?  Adding sulfur dioxide gas to the reaction vessel? Provide a “rate changes” explanation.

3 Consider the reversible reaction: 2 NaHSO 3 (s)  Na 2 SO 3 (s) + H 2 O(g) + SO 2 (g) ΔH > 0  What will be the mass action expression for this reaction?  How will the position of equilibrium be affected by the following changes?  Adding sulfur dioxide gas to the reaction vessel? Provide a “rate changes” explanation.  Removing some solid sodium sulfite from the reaction vessel? Provide a “le Chatelier” explanation.

4 Consider the reversible reaction: 2 NaHSO 3 (s)  Na 2 SO 3 (s) + H 2 O(g) + SO 2 (g) ΔH > 0  What will be the mass action expression for this reaction?  How will the position of equilibrium be affected by the following changes?  Adding sulfur dioxide gas to the reaction vessel? Provide a “rate changes” explanation.  Removing some solid sodium sulfite from the reaction vessel? Provide a “le Chatelier” explanation.  Removing water vapor by adding an inert hygroscopic solid? Provide a “mathematical” explanation.

5 Consider the reversible reaction: 2 NaHSO 3 (s)  Na 2 SO 3 (s) + H 2 O(g) + SO 2 (g) ΔH > 0  What will be the mass action expression for this reaction?  How will the position of equilibrium be affected by the following changes?  Adding sulfur dioxide gas to the reaction vessel? Provide a “rate changes” explanation.  Removing some solid sodium sulfite from the reaction vessel? Provide a “le Chatelier” explanation.  Removing water vapor by adding an inert hygroscopic solid? Provide a “mathematical” explanation.  Increasing the volume. Provide a “le Chatelier” explanation… then confirm with a “mathematical” explanation.

6 Consider the reversible reaction: 2 NaHSO 3 (s)  Na 2 SO 3 (s) + H 2 O(g) + SO 2 (g) ΔH > 0  What will be the mass action expression for this reaction?  How will the position of equilibrium be affected by the following changes?  Adding sulfur dioxide gas to the reaction vessel? Provide a “rate changes” explanation.  Removing some solid sodium sulfite from the reaction vessel? Provide a “le Chatelier” explanation.  Removing water vapor by adding an inert hygroscopic solid? Provide a “mathematical” explanation.  Increasing the volume. Provide a “le Chatelier” explanation… then confirm with a “mathematical” explanation.  Heating the reaction vessel? (any explanation)

7 A student was studying the following reaction: SO 2 Cl 2 (g)  SO 2 (g) + Cl 2 (g). The value of K p for the sys­tem is 12.5 when the temperature is 565 K. A reactor vessel was filled with enough SO 2 Cl 2 (g) to give it a pressure of atm at 565 K. The system was left undisturbed so it could come to equilibrium. Calculate the total pressure, in atmospheres, at equilibrium.

8 Maybe change this one… the cube root is yucky… but works. At 200.0˚C, K c = 1.4 x for the following reaction: N 2 O(g) + NO 2 (g)  3 NO(g) A sample of 300 mL of NO(g) measured at 800 torr and 25˚C is placed in a 4.00 L container. The temperature is raised to 200.0˚C and the system is allowed to reach equilibrium. What will be the molar concentration of NO at equilibrium? What will be its partial pressure?


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