Interpretation:
The value of new equilibrium constant K should be calculated.
Concept Introduction:
The
For a general equilibrium reaction as follows:
The expression for equilibrium constant of the recation can be written as follows:
Here,
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Introduction to General, Organic and Biochemistry
- 7-32 A particular reaction has an equilibrium constant of 1.13 under one set of conditions and an equilibrium constant of 1.72 under a different set of conditions. Which conditions would be more advantageous in an industrial process that sought to obtain the maximum amount of products? Explain.arrow_forward7-28 When the following reaction reached equilibrium at 325 K, the equilibrium constant was found to be 172. When a sample was taken of the equilibrium mixture, it was found to contain 0.0714 M NO2. What was the equilibrium concentration of N2O4?arrow_forwardBased on the diagrams, chemical reaction, and reaction conditions depicted in Problem 9-81, for which of the diagrams is the numerical value of the equilibrium constant the smallest?arrow_forward
- Is a system at equilibrium if the rate constants of the forward and reverse reactions are equal?arrow_forward7-40 Is there any change in conditions that change the equilibrium constant, K, of a given reaction?arrow_forwardBased on the diagrams, chemical reaction, and reaction conditions depicted in Problem 9-83, which of the diagrams represents the equilibrium mixture if the numerical value of the equilibrium constant is 9.0?arrow_forward
- . Explain what it means that a reaction has reached a state of chemical equilibrium. Explain why equilibrium is a dynamic state: Does a reaction really “stop” when the system reaches a state of equilibrium? Explain why, once a chemical system has reached equilibrium, the concentrations of all reactants remain constant with time. Why does this constancy of concentration not contradict our picture of equilibrium as being dynamic? What happens to the rates of the forward and reverse reactions as a system proceeds to equilibrium from a starting point where only reactants are present?arrow_forwardAn equilibrium involving the carbonate and bicarbonate ions exists in natural waters: HCO5_(aq) «=* H+(aq) + COf-(aq) Assuming that the reactions in both directions are elementary' processes: Write rate expressions for the forward and reverse reactions. Write an expression for the equilibrium constant based on the rates of the forward and reverse reactions.arrow_forward7-64 As we shall see in Chapter 20, there are two forms of glucose, designated alpha and betawhich are in equilibrium in aqueous solution. The equilibrium constant for the reaction is 1.5 at 30°C. (a) If you begin with a fresh 1.0 M solution of D-glucose in water, what will be its concentration when equilibrium is reached? (b) Calculate the percentage of glucose and of glucose present at equilibrium in aqueous solution at 30°C.arrow_forward
- 7-36 Complete the following table showing the effects of changing reaction conditions on the equilibrium and value of the equilibrium constant, K. Change in Condition How the Reacting System Changes to Achieve a New Equilibrium Does the Value of K Increase or Decrease? Addition of a reactant Shift to product formation Neither Removal of a reactant Addition of a product Removal of a product Increasing pressurearrow_forwardUse the given Keq value and the terminology in Table 9-2 to describe the relative amounts of reactants and products present in each of the following equilibrium situations. a. 2NO(g)N2(g)+O2(g)Keq(25C)=11030 b. N2(g)+3H2(g)2NH3(g)Keq(25C)=1109 c. PCl5(g)PCl3(g)+Cl2(g)Keq(127C)=1102 d. 2Na2O(s)4Na(l)+O2(g)Keq(427C)=11025arrow_forwardBecause carbonic acid undergoes a second ionization, the student in Exercise 12.39 is concerned that the hydrogen ion concentration she calculated is not correct. She looks up the equilibrium constant for the reaction HCO,-(aq) «=* H+(aq) + COf'(aq) Upon finding that the equilibrium constant for this reaction is 4.8 X 10“H, she decides that her answer in Exercise 12.39 is correct. Explain her reasoning. A student is simulating the carbonic acid—hydrogen carbonate equilibrium in a lake: H,CO,(aq) 5=6 H+(aq) + HCO,'(aq) K = 4.4 X 10'7She starts with 0.1000 A1 carbonic acid. W hat are the concentrations of all species at equilibrium?arrow_forward
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