What happens when a chemical reaction reaches equilibrium? A. The rate of the forward reaction and the rate of the reverse reaction equal zero. O B. The reaction reverses so some of the products are converted back into reactants. O C. The reaction stops because the concentration of reactants is too low to sustain it. O D. The amounts of reactants and products remain constant.

What happens when a chemical reaction reaches equilibrium? A. The rate of the forward reaction and the rate of the reverse reaction equal zero. O B. The reaction reverses so some of the products are converted back into reactants. O C. The reaction stops because the concentration of reactants is too low to sustain it. O D. The amounts of reactants and products remain constant.

Chemistry for Today: General, Organic, and Biochemistry

9th Edition

ISBN:9781305960060

Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Chapter8: Reaction Rates And Equilibrium

Section: Chapter Questions

Problem 8.92E

See similar textbooks

Similar questions

. When a chemical system has reached equilibrium, the concentrations of all reactants and products remain _________ with lime.
In the figure, orange fish are placed in one aquarium and green fish in an adjoining aquarium. The two tanks are separated by a removable partition that is initially closed. (a) Describe what happens in the first few minutes after the partition is opened. (b) What would you expect to see several hours later? (c) How is this system analogous to dynamic chemical equilibrium?
. For an equilibrium involving gaseous substances, what effect, in general terms, is realized when the volume of the system is decreased?
The gaseous reaction 2HBr(g)H2(g)+Br2(g) is endothermic. Tell which direction the equilibrium will shift for each of the following: a.Some H2 is added. b.The temperature is increased. c.Some Br2 is removed. d.A catalyst is added. e.Some HBr is removed. f.The temperature is decreased, and some HBr is removed.
In Section 13.1 of your text, it is mentioned that equilibrium is reached in a closed system. What is meant by the term closed system. and why is it necessary to have a closed system in order for a system to reach equilibrium? Explain why equilibrium is not reached in an open system.
12.100 A reaction important in smog formation is O3(g)+NO(g)O2(g)+NO2(g)K=6.01034 (a) If the initial concentrations are [O3]=1.0106M,[NO]=1.0105M,[NO2]=2.5104M, and [O2]=8.2103M , is the system at equilibrium? If not, in which direction does the reaction proceed? (b) If the temperature is increased, as on a very warm day, will the concentrations of the products increase or decrease? (HINT: You may have to calculate the enthalpy change for the reaction to find out if it is exothermic or endothermic.)
Tell what will happen to each equilibrium concentration in the following when the indicated stress is applied and a new equilibrium position is established. a. H+(aq)+HCO3(aq)H2O(l)+CO2(g); HCO3is added. b. CO2(g)+H2O(l)H2CO3(aq)+heat; CO2is removed. c. CO2(g)+H2O(l)H2CO3(aq)+heat; The system is cooled.
. Write the equilibrium expression for each of the following heterogeneous equilibria. a. 4Al(s)+3O2(g)2Al2O3(s)b. NH3(g)+HCl(g)NH4Cl(s)C. 2Mg(s)+O2(g)2MgO(s)
. Hydrogen gas, oxygen gas, and water vapor are in equilibrium in a closed container. Hydrogen gas is injected into the container, and the system is allowed to return to equilibrium. Which of the following occurs? Explain your answer. 2H2(g)+O2(g)2H2O(g)a. The concentration of oxygen gas remains constant. b. The value for K increases. c. The concentration of oxygen gas increases. d. The concentration of water vapor increases. e. The value for K decreases.
Consider an equilibrium mixture of four chemicals (A. B. C. and D. all gases) reacting in a closed flask according to the following equation: A+BC+Da. You add more A to the flask. How does the concentration of each chemical compare to its original concentration after equilibrium is re-established? Justify your answer. h. You have the original set-up at equilibrium, and add more D to the flask. How does the concentration of each chemical compare to its original concentration after equilibrium is re-established? Justify your answer.