Search Courses Which of the following statements is true in a reaction system at equilibrium? Select one: a. The equilibrium constant is zero. O b. The number of collisions per unit time between reactants is equal to the number of collisions per unit time between products. OC. Reactants and products are present in equimolar amounts. O d. Reactants are reacting to form products at the same rate as products are reacting to form reactants. O e. The product of the concentrations of the products divided by the product of the concentrations of the reactants is always a constant.

Search Courses Which of the following statements is true in a reaction system at equilibrium? Select one: a. The equilibrium constant is zero. O b. The number of collisions per unit time between reactants is equal to the number of collisions per unit time between products. OC. Reactants and products are present in equimolar amounts. O d. Reactants are reacting to form products at the same rate as products are reacting to form reactants. O e. The product of the concentrations of the products divided by the product of the concentrations of the reactants is always a constant.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

15..What does Le Châtelier’s principle state about a disturbance to a chemical reaction? A.The reverse reaction is minimized in response to a disturbance. B.The equilibrium position of a reaction shifts to minimize the disturbance. C.The reactants are reformed in response to a disturbance. D.The speed of the reaction increases to counteract the disturbance.
A chemical equilibria that involves reactant and products that are present in only one phase. O a. homogeneous equilibria b. ionization constant C. heterogeneous equilibria O d. equilibrium constant
Consider a chemical reaction which has achieved a state of equilibrium. Which of the following statements are true in this equilibrium state? (Mark all that apply.) A. The concentrations of reactants and prodcuts are still changing with time. B. The concentrations of reactants and products is no longer changing with time. C. The rate of the reverse reaction is greater than that of the forward reaction. D. The rates of the forward and reverse reactions are equal. E. The rate of the forward reaction is greater than that of the reverse reaction.
Oxygen and ozone are allowed to come to equilibrium in the exothermic reaction 203(g) =302(g) Which change will increase the numerical value of the equilibrium constant, K? Periodic Table and Datasheet Select one: O a. adding more O2(g) O b. adding a suitable catalyst O c. decreasing the temperature O d. increasing the volume of the container
5. What happens to the coefficients in a reaction when writing the equilibrium constant expression? They become multipliers in the equilibrium constant expression They become exponents in the equilibrium constant expression They become coefficients in the equilibrium constant expression They disappear
Directions: Given the equilibrium reaction (column 1) and the stress applied (column 2), choose the appropriate effect and shift of equilibrium found in column 3 and 4, respectively. Write the letter of the correct answer on your notebook. Equilibrium Reaction Stress Effect Equilibrium Applied Decreasing A. Shift 1. H,(g) + Ch(g) 2 HCI (g) increase A. Forward pressure В. decrease B. Backward C. No effect in the number of C. No Shift moles of HCI(g) 2. Fe,0,(s) + 4H, + heat 3 Fe(s) 4 H,O(g) Increasing A. increase B. decrease Temperature C. No effect A. Forward the B. Backward C. No Shift In the volume of water vapor collected. 3. 2 NO(g) +O, (g) 2 NO,(g) + Addition of A. increase A. Forward heat helium В. decrease B. Backward C. No effect in the number of C. No Shift moles of NO Removal of A. increase CO2 4. H,COs(aq) --CO.(aq) + H,O(I) A. Forward B. decrease B. Backward C. No effect In the amount of C. No Shift H2CO3
If we represent the equilibrium as: 2 NO2(g) = N204(g) We can conclude that: |1. This reaction is: A. Exothermic B. Endothermic C. Neutral D. More information is needed to answer this question. 2. When the temperature is increased the equilibrium constant, K: A. Increases B. Decreases C. Remains the same D. More information is needed to answer this question. 3. When the temperature is increased the equilibrium concentration of NO2: A. Increases B. Decreases C. Remains the same D. More information is needed to answer this question.
7. What happens to a reaction at equilibrium when a product concentration is decreased? The reaction is unchanged. a) b) A catalyst is formed c) The reaction makes more reactants. d) The reaction makes more products. 8. What happens to a reaction at equilibrium when a reactant concentration is increased? a) b) c) d) The reaction is unchanged. A catalyst is formed The reaction makes more reactants. The reaction makes more products. 9. Consider the equilibrium Sa(s) + 8 O2(g) + 8 SO2(9) In which direction will this reaction move if more oxygen is added to the reaction vessel? we are not given enough information to determine the direction the reaction will move a) there will be no change in the position of the equilibrium b) c) I in the reverse direction d) in the forward direction 10. A catalyst is added to the equilibrium reaction: NH4CI(s) +→ NH3(g) + Cl2(0) The reaction will not return to equilibrium a) b) reach equilibrium faster c) produce more reactant d) produce more of the…
Given each equilibrium constant, state whether the reactants are favored, the products are favored, or both the reactants and products are present at equilibrium. a. 5.0 × 10 −4 b. 4.4 × 10 5 c. 350 d. 0.35
Which of the following is/are true concerning a chemical reaction at equilibrium? The system will be a mixture of reactant and products. 2. The rate of the forward and reverse reactions are equal. 3. The amount of each reactant and product is constant. 1 only a. b. 2 only 3 only C. d. 1 and 2 1, 2, and 3 е.
Consider the reaction: A ←--→ B At equilibrium, what can be said about the concentration of A and B? Explain (note: the numerical value of the equilibrium constant changes with temperature).
Use Le Châtelier’s Principle to explain the effect each of the following changes will have upon the system—will the equilibrium shift toward the product or reactant side? Why? N2(g) + 3 H2(g) ↔ 2 NH3(g) + heat a. If more hydrogen is added to the system the equilibrium will shift to the..... (pick one and explain)i. Right ii. Left iii. Remains unchanged b. If ammonia is removed from the system the equilibrium will shift to the..... (pick one and explain)i. Right ii. Left iii. Remains unchanged c. If nitrogen is removed from the system the equilibrium will shift to the..... (pick one and explain)