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80. Base your answer to the following question on the following system at equilibrium: 2 dz(g) + 2 H20(g) → 4 HCI(g) + Oz(g) AH= +27 kcal If the temperature of the system is increased at a constant pressure, the rate of the forward reaction will A) decrease B) increase C) remain the same

80. Base your answer to the following question on the following system at equilibrium: 2 dz(g) + 2 H20(g) → 4 HCI(g) + Oz(g) AH= +27 kcal If the temperature of the system is increased at a constant pressure, the rate of the forward reaction will A) decrease B) increase C) remain the same

Chemistry
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...
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zoom in 85 80 80. Base your answer to the following question on the following system at equilibrium: 85. What would the correct equaton for determining percent error be in a theoretical experiment where the experimental value is determined as 36 J and the accepted value is 38.5 J? 2 az(g) + 2 H2O(g) + 4 HCI(g) + Oz(g) A) 36 – 38.5 (100%) All = +27 kcal If the temperature of the system is increased at a constant pressure, the rate of the forward reaction will 38.5 B) 36 - 38.5| (100%) C) 36 36 36 (100%) A) decrease B) increase 38.5 C) remain the same D) 38.5 (100%) 36 81 81. An atomic mass unit is defined as exactly E) none of the above A) t the mass of a 160 atom B) the mass of a hydrogen atom C) the mass of a 12C atom D) 5 the mass of a 19F atom E) i the mass of a 14N atom 86 36. Consider the diagram for a pure substance. 40 20 82 82. What is "X" in the equation: -20 21083Bİ 0-1e + "X" Heating Time A) 20983Bİ C) 21082PD E) 21183BI B) 21094PO D) 20982PD 83 83. Classify the nuclear reaction. 23191 Pa → 227 g9Pb +42HE The graph represents a solid at -40°C being heated uniformly until it changes into a gas. The melting point of the solid is A) -20°C C) 37°C E) 0°C B) 10°C D) 50°C A) electron capture B) alpha decay C) beta decay D) positron emission E) gamma emission 87 87. The total positive and negative charges in the formula of an ionic compound add up to 84 84. Why does increased concentration increase reaction rate? A) Increased average kinetic energy B) Increased energy of reactants C) Increased number of collisions D) Increased energy for effective collisions A) one B) zero C) any whole number D) the number of elements in the compound E) any positive number E) Increased activation energy Temperature, °C
Transcribed Image Text:zoom in 85 80 80. Base your answer to the following question on the following system at equilibrium: 85. What would the correct equaton for determining percent error be in a theoretical experiment where the experimental value is determined as 36 J and the accepted value is 38.5 J? 2 az(g) + 2 H2O(g) + 4 HCI(g) + Oz(g) A) 36 – 38.5 (100%) All = +27 kcal If the temperature of the system is increased at a constant pressure, the rate of the forward reaction will 38.5 B) 36 - 38.5| (100%) C) 36 36 36 (100%) A) decrease B) increase 38.5 C) remain the same D) 38.5 (100%) 36 81 81. An atomic mass unit is defined as exactly E) none of the above A) t the mass of a 160 atom B) the mass of a hydrogen atom C) the mass of a 12C atom D) 5 the mass of a 19F atom E) i the mass of a 14N atom 86 36. Consider the diagram for a pure substance. 40 20 82 82. What is "X" in the equation: -20 21083Bİ 0-1e + "X" Heating Time A) 20983Bİ C) 21082PD E) 21183BI B) 21094PO D) 20982PD 83 83. Classify the nuclear reaction. 23191 Pa → 227 g9Pb +42HE The graph represents a solid at -40°C being heated uniformly until it changes into a gas. The melting point of the solid is A) -20°C C) 37°C E) 0°C B) 10°C D) 50°C A) electron capture B) alpha decay C) beta decay D) positron emission E) gamma emission 87 87. The total positive and negative charges in the formula of an ionic compound add up to 84 84. Why does increased concentration increase reaction rate? A) Increased average kinetic energy B) Increased energy of reactants C) Increased number of collisions D) Increased energy for effective collisions A) one B) zero C) any whole number D) the number of elements in the compound E) any positive number E) Increased activation energy Temperature, °C
zoom in 88 88. Heat of Vaporization of Ethanol, CH3CH2 90 90. Which statement is true? OH = 880. J«g¬. A) A decrease in pressure of a gas causes an decrease in volume. How many Joules are needed to vaporize 2.00 g of liquid ethanol, CH3CH2OH, at its boiling point, 78°C? B) The partial pressure of a gas is dependent on its mass. C) In a mixture of gases, the gas with the most molecules exerts the most B) 3360 J D) 557 J A) 673 J C) 880 J E) 1760 J 89 89. A 320. mL sample of a dry gas is pressure. D) An increase in the pressure of a gas could be caused by decreasing the number of molecules. collected at 47°C and 740 mm Hg. What is its volume at 7°C and 560 mm Hg? E) Absolute zero is -273 K. A) 277 mL C) 483 ml E) 320 mL B) 370 ml D) 212 mL
Transcribed Image Text:zoom in 88 88. Heat of Vaporization of Ethanol, CH3CH2 90 90. Which statement is true? OH = 880. J«g¬. A) A decrease in pressure of a gas causes an decrease in volume. How many Joules are needed to vaporize 2.00 g of liquid ethanol, CH3CH2OH, at its boiling point, 78°C? B) The partial pressure of a gas is dependent on its mass. C) In a mixture of gases, the gas with the most molecules exerts the most B) 3360 J D) 557 J A) 673 J C) 880 J E) 1760 J 89 89. A 320. mL sample of a dry gas is pressure. D) An increase in the pressure of a gas could be caused by decreasing the number of molecules. collected at 47°C and 740 mm Hg. What is its volume at 7°C and 560 mm Hg? E) Absolute zero is -273 K. A) 277 mL C) 483 ml E) 320 mL B) 370 ml D) 212 mL
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