Presentation is loading. Please wait.

Presentation is loading. Please wait.

13.28Consider the interconversion of A molecules (red spheres) and B molecules (blue spheres) according to the reaction A B. Each of the following series.

Similar presentations


Presentation on theme: "13.28Consider the interconversion of A molecules (red spheres) and B molecules (blue spheres) according to the reaction A B. Each of the following series."— Presentation transcript:

1

2

3 13.28Consider the interconversion of A molecules (red spheres) and B molecules (blue spheres) according to the reaction A B. Each of the following series of pictures represents a separate experiment in which time increases from left to right: Which of the experiments has resulted in an equilibrium state? What is the value of the equilibrium constant for the reaction Explain why you can calculate without knowing the volume of the reaction vessel. (a) (b) (c)

4 13.29The following pictures represent the equilibrium state for three different reactions of the type A 2  X 2 2 AX (X  B,C, or D): (a) Which reaction has the largest equilibrium constant? (b) Which reaction has the smallest equilibrium constant?

5 13.30The reaction A 2  B A  AB has an equilibrium constant K c  2. The following pictures represent reaction mixtures that contain A atoms (red), B atoms (blue), and and AB molecules: Which reaction mixture is at equilibrium? For those mixtures that are not at equilibrium, will the reaction go in the forward or reverse direction to reach equilibrium? (a) (b)

6 13.31The following pictures represent the initial state and the equilibrium state for the reaction of A 2 molecules (red) with B atoms (blue) to give AB molecules: Write a balanced chemical equation for the reaction. If the volume of the equilibrium mixture is decreased, will the number of AB molecules increase, decrease, or remain the same? Explain. (a) (b)

7 13.32Consider the reaction A  B AB. The vessel on the right contains an equilibrium mixture of A molecules (red spheres), B molecules (blue spheres), and AB molecules. If the stopcock is opened and the contents of the two vessels are allowed to mix, will the reaction go in the forward or reverse direction? Explain.

8 13.33The following pictures represent the composition of the equilibrium mixture for the reaction A  B AB at 300 K and at 400 K: Is the reaction exothermic or endothermic? Explain using Le Châtelier’s principle.

9 13.34The following pictures represent equilibrium mixtures at 325 K and 350 K for a reaction involving A atoms (red), B atoms (blue), and AB molecules: Write a balanced equation for the reaction that occurs on raising the temperature. Is the reaction exothermic or endothermic? Explain using Le Châtelier’s principle. If the volume of the container is increased, will the number of A atoms increase, decrease, or remain the same? Explain. (a) (b) (c)

10 13.35The following picture represents an equilibrium mixture of solid BaCO 3, solid BaO, and gaseous CO 2 obtained as a result of the endothermic decomposition of BaCO 3 : Draw a picture that represents the equilibrium mixture after addition of four more molecules. Draw a picture that represents the equilibrium mixture at a higher temperature. (a) (b)

11 13.36The following picture represents the composition of the equilibrium mixture for the endothermic reaction A 2 2A at 500 K: (a) Adding a catalyst (b) Increasing the volume (c) Decreasing the temperature Draw a picture that represents the equilibrium mixture after each of the following changes:

12 13.37The following picture represents the equilibrium state for the reaction 2AB A 2  B 2 : Which rate constant is larger, k f or k r ? Explain.


Download ppt "13.28Consider the interconversion of A molecules (red spheres) and B molecules (blue spheres) according to the reaction A B. Each of the following series."

Similar presentations


Ads by Google