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Newest Chemical Equilibrium Questions

1. Fe ⁺³(aq) + SCN ⁻¹(aq) ⇆ FeSCN ⁺²(aq) + heatBased on the reaction above, which way will the equilibrium shift if a
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2. Use the chemical equation showing the dissolution of sodium bromide in water to answer the question.NaBr(s) ⇌ Na (aq) + Br
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3. Use the equation showing the dissociation of iron thiocyanate in water to answer the question.FeSCN (aq) ⇄ Fe (aq) + SCN (aq)
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4. Describe how you could adjust the settings of the simulation to increase the number of red (H3O+) and blue (A-) particles in the
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5. Consider the following reaction at equilibrium: CO2 + H2O ⇔ H2CO3. What would be the effect of adding additional H2O?Reactions
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6. Use Le Chatelier's Principle to predict the effect, if any, of removing H, from the equilibrium systemC(s) + 2H2(g -><- CH4(g) +
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7. Calculate the solubility product constant of PbI₂. Remember to include an ICE table and general expression for full marks.
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8. Which of the following factors will change the value of the equilibrium constant K?Question 7 options: Decreasing the
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9. Unit 5 Activity 2: Calculations Involving Keq and Factors [7 marks] 2. 1.2 mol of gaseous hydrogen fluoride (HF(g)) is injected
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10. Unit 5 Activity 2: Calculations Involving Keq and Factors [7 marks]2. 1.2 mol of gaseous hydrogen fluoride (HF(g)) is injected
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11. Calculate the [H3O+] of an aqueous solution that is 7.8 × 10-13 M in OH. Be sure your answer has the correct number of
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12. The solubility of Ag2CrO4 is 25 mg/lit. Calculate solubility product, if molecular weight in 331.7 g/mol.
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13. The solubility of A_{1/2}*Cr*O_{4} is 25 mg/lit. Calculate solubility product, if molecular weight in 331.7 g/mol.
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14. Calculate the value of OH"] from the given H3 0+ in each solution and label the solution as acidic, basic, or neutral.Note: The
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15. Using the equilibrium constant expression for this reaction:N2 + 3 H2 & 2 NH3 What is the Kc value using the following
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16. For each value, are the reactants or products favored at equilibrium?K=7.7x104 Equilibrium favors the (Choose one) × Part 2 of
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17. Bomai places 7mol of Ammonia (NH3) in 14L flask.At Eqiulibrium 0.2M Ammonium (NH4+ ) was found in the flask. What is the
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18. A student places 7mol of ammonia in 14L flask. At equilibrium 0.2M ammonium was found in the flask.what is the equilibrium
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19. A student places 7mol of ammonia in 14L flask. 0.2M ammonium was found in the flask. Use mole ratio to fill it the initial,
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20. Given the reaction:2HF (g) = H2 (g)+ F2 (g) if the initial concentration of. HF is 0.025M and the equilibrium concentration of
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21. Relationship between kc and Qc to predict the direction of the reaction
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22. Which is not a way to express the hydroxide and hydronium ion concentrations in pure water at 25°C?pH of 7 1.0 × 107 M 1.0 ×
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23. The equation 2NO2><N2O4 represents a system _____ .in chemical equilibrium in physical equilibrium that does not change that
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24. Which describes the state at which products form at the same rate as reactants?physical equilibrium phase reversal phase change
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25. According to Le Châtelier’s principle, what happens when a system in equilibrium is subjected to a change?The equilibrium is
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26. According to Le Châtelier’s principle, what happens when a system in equilibrium is subjected to a change?The equilibrium is
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27. Which is not a characteristic of chemical equilibrium?The forward and reverse processes occur at the same rate. The reactions go
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28. According to Le Châtelier’s principle, what happens when a system in equilibrium is subjected to a change?The reverse
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29. Bomai places 7mol of Ammonia NH3 in 14L flask. At equilibrium 0.2M Ammonium NH4 was found in the flask. What is the equilibrium
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30. Consider the following reaction.S(s) + 02(g) = SO2 (g) Part 1 of 2 Write the expression for the equilibrium constant for this
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31. Bomai places 7mol of Ammonia (NH3) in 14L flask. At equilibrium 0.2M Ammonium (NH4) was found in the flask. What is the
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32. Bomai places 7 mol of ammonia in the 14 flask.at equilibrium 0.2M ammonium was found in the flask.what is the balanced chemical
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33. What is the equilibrium constant kc for the reaction if 7 mol of ammonia in 14 L flask.at equilibrium 0.2 M ammonium was found
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34. 7 moles of ammonia in 14 liters of water ,at equilibrium 0.2 moles ammonium was found. What is the balance chemical equation and
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35. Kamore place 7 mole of ammonia in 14L flask.At equilibrium 0.2 mole ammonium was found in the flask . Write its balance chemical
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36. 7 moles of ammonia is placed in 14L flask.At equilibrium 0.2M ammonium was found in the flask. What is the equilibrium constant
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37. CrO42– + 2H+ ⇄ Cr2O72– + H2OA student adds sodium hydroxide (NaOH) to the solution at equilibrium. In one to two
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38. Definition and example for each word.Chemical Equilibrium Closed Systems Equilibrium Le Chatelier’s Principal Resource
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39. A solution at equilibrium is yellow-orange.A solution at equilibrium is yellow-orange. A shift towards the products would cause
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40. Once a reaction reaches chemical equilibrium, the concentrations of the reactants and products are ________?Equilibrium shifts
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41. Ph of [OH-] = 0.024
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42. CO(g) + H2O(g) ⇄ CO2(g) + H2(g) + energyWhich change to the system would be favorable to the forward reaction?
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43. Below is presentedsystems that contain solutions aqueous NaCl in three different conditions, maintained at temperature constant.
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44. What does Le Chatelier's principle say will happen when external changes are made to a system that includes reversible chemical
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45. Which of the following is NOT necessary for chemical equilibrium?* 1 point a closed system reactants and products that are the
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46. A system is said to be in dynamic equilibrium when the forward reaction occurs more quickly than the reverse reaction.true or
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47. The equilibrium constant K for the reaction (A + B \rightleftharpoons 2AB) is calculated using the formula:[ K =
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48. Cobalt ions form complex ions with water and chloride as shown in the reaction. The left side of the reaction is pink, and the
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49. A system is at equilibrium. Which statement correctly describes the effect on the forward and reverse reaction rates if
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50. 1. The [H3O+] in a cabernet sauvignon wine is 5.9 × 10–4 M. What is the [–OH] in this wine?
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51. can you help me with thisCalculate the value of OH from the given Note: The ion product of water = 1.0 x 10~14 Part 1 of 2 H3 0+
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52. can you help me with this Calculate the value of [OH" ] from the given | H3O+ | in each solution and label the solution as
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53. can you help me with this Calculate the value of [OH" ] from the given | H3O+ | in each solution and label the solution as
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54. can you help me with this write the correct significant figure and standard formCalculate the value of H3O^+ and [OH^- ]in each
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55. Can you help me with this For the general reaction a A + bB <> cC + dD,[C]ʻ[DJd [A]ª[B]b Once the reaction has reached
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56. Which is true of the location of the equilibrium for a solution of acetic acid?Group of answer choices This cannot be determined
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57. To 1.0 L of a 0.35 M solution of HClO2 is added 0.18 mol of NaClO.Calculate the [HClO2] at equilibrium. How to solve this?
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58. How will the equilibrium shift when the pressure is decreased on a gaseous reaction system at equilibrium? a There will be no
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59. Le Chatelier's principle states that when a system at equilibrium is disturbed, the system will shift in the direction that will
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60. For each situation, determine how the equilibrium will shift to relieve the stress on the system. 2SO2 (g) + O2 (g) ↔ 2SO3 (g)
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61. Changing the pressure is a stress that can be added to a system at equilibrium. How will the equilibrium shift to oppose each of
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62. When a product is removed from a reaction system at equilibrium, how does the system react to compensate for the stress that is
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63. Decide if each statement below is True or False for a reaction that has reached equilibrium. Column A 1. At equilibrium, the
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64. Which phrase defines chemical equilibrium?(1 point) Responses a state in which the forward and reverse reactions are proceeding
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65. Column A1. The pressure on the system is decreased. 2. The pressure on the system is increased. Column B a.The equilibrium will
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66. Knowing the number of moles of gas on each side of the equation is important to know in determining how changes in pressure will
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67. Which statements below are TRUE of a chemical reaction that has reached equilibrium?Choose the 5 correct statements. a A
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68. Use the equation to answer the question. H2O(l) + heat ⇄ H2O(g) A sample of water is at equilibrium at 100°C. Which statement
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69. A system is at equilibrium. Which statement is correct?(1 point) Responses The system has been disturbed. The system has been
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70. At same temperature n2o4 is dissociated to 40 nd 50 t total pressure p1 and p2 atm respectively in no2. then the ratio of p1 and
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71. 5) What does Le Chatelier's principle say will happen when external changes are made to a system that includes reversible
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72. Equilibrium and Stability Quick Check 4 of 54 of 5 Items Question Use the chemical equation showing the dissolution of sodium
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73. A system is at equilibrium. Which statement is correct?(1 point) Responses The concentrations of the reactants equal the
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74. Calculate K using the following concentrations of each substance at equilibrium:C2H4 =0.090 M, Cl2 =0.24 M, C2H4Cl2 =0.090 M Be
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75. For each value, are the reactants or products favored at equilibrium?Part 1 of 2 K=6.7x104 Equilibrium favors the (Choose one)
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76. For each value, are the reactants or products favored at equilibrium?Part 1 of 2 K=6.7x104 Equilibrium favors the (Choose one) X
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77. The given balanced chemical equation is:[C_2H_4(g) + H_2(g) \rightarrow C_2H_6(g)] We need to write the expression for the
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78. The given balanced chemical equation is:[C_2H_4(g) + H_2(g) \rightarrow C_2H_6(g)] We need to write the expression for the
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79. Given the concentrations at equilibrium: [ [\text{CO}] = 0.180 , \text{M} ] [ [\text{H}_2\text{O}] = 0.12 , \text{M} ] [
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80. The reaction is: (4NH_3(g) + 3O_2(g) \rightleftharpoons 2N_2(g) + 6H_2O(g))We need to write the expression for the equilibrium
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81. If Reaction B (attached) was at equilibrium and then the pressure in its container was increased, ____ CH3OH would be present
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82. Does chemical equilibrium mean reactants and products are the same state of matter
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83. which of the following is not necessary for chemical equilibrium
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84. Write the expression for the equilibrium constant for the following equation.PCl3(g) + Cl2(g) = PCl5 (g) K=
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85. Write the expression for the equilibrium constant for this equilibrium.
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86. How can you tell that this process is not at equilibrium? (1 point) Responses The reaction mixture is not complete as reactants
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87. If the equilibrium constant is very very large, what does this mean with regards to the chemical reaction?a) That once the
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88. In our present experiment, we demonstrate Le Chatelier Principle in what manner(s)?Group of answer choices changing the
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89. What are the units for the equilibrium constant, K?
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90. ) Consider the reaction: N2(g) + O2(g) ⇌ 2 NO(g). If [N2] = 0.520 M, [O2] = 0.0662 M, and [NO] = 0.00956 at equilibrium,
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91. Consider the following reversible reaction at equilibrium: C6H12O6 (aq) + 6 O2(g) ⇌ 6 CO2(g) + 6 H2O(l). Given that this
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92. Consider the following reversible reaction at equilibrium: C6H12O6 (aq) + 6 O2(g) ⇌ 6 CO2(g) + 6 H2O(l). If oxygen gas is
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93. In each of the following questions, identify which way (to the left or to the right) does equilibrium shift to relieve the
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94. Which K value below is consistent with an equilibrium system in which the reactants are favored?A) K = 1 B) K = 1.8 x 103 C) K =
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95. ) An equilibrium constant with a value of 8.0 × 106 indicates that at equilibrium ________.A) the reactants are favored B) the
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96. An equilibrium constant with a value of 8.0 × 106 indicates that at equilibrium ________.A) the reactants are favored B) the
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97. Which occurs when the forward and reverse reactions occur at the same rate?The changes are physical. The system is in
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98. A system is at equilibrium. Which statement is correct?(1 point)Responses The rate of the forward reaction equals the rate of
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99. A 2.0 L vessel is filled with 2.0 mol of SO2, 1.2 mol of O2 and 4.6 mol of SO3. After equilibrium of the formation reaction,
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100. Calculate the value of Keq for this reaction at equilibrium.2NOCl(g) ↔2NO(g) + Cl2(g)
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