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1. Which equation represents the bond enthalpy for the H-Br bond in hydrogen bromide? A. HBr(g)-H(g)+Br(g) B. HBr(g)-H(g)+Br(1) C. HBr(g)-H(g)+12B12(1) D. HBr(g)-H(g)+12B12(g)

1. Which equation represents the bond enthalpy for the H-Br bond in hydrogen bromide? A. HBr(g)-H(g)+Br(g) B. HBr(g)-H(g)+Br(1) C. HBr(g)-H(g)+12B12(1) D. HBr(g)-H(g)+12B12(g)

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Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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1:25 ul 4G ( Gym buddies HL_DP2.pdf Page 1 of 14 Section A 1. Which equation represents the bond enthalpy for the H-Br bond in hydrogen bromide? A. HBr(g)-H(g)+Br(g) B. HBr(g)-H(g)+Br(1) C. HBr(g)-H(g)+12B12(1) D. HBr(g)-H(g)+12B12(g) 2. Which process is endothermic? A. CH4(g)+202(g)-CO2(g)+2H2O(g) B. HCI(aq)+NaOH(aq)¬NaCI(aq)+H2O(I) C. CaCO3(s)-CaO(s)+CO2(g) D. H2O(g)-H20(1) 3. Hydrazine reacts with oxygen. N2Ha(l) + O2(g) → Na(g) + 2H2O(0) AH = -623 kJ What is the standard enthalpy of formation of NaH«(i) in kJ? The standard enthalpy of formation of H2O(1) is -286 kJ. A. -623 - 286 B. -623 + 572 C.-572 + 623 D. -286 + 623 4. Which statement is correct for this reaction? FezO3 (s) + 3CO (g) - 2Fe (s) + 3CO2 (g) AH = -26.6 kJ A. 13.3 kJ are released for every mole of Fe produced. B. 26.6 kJ are absorbed for every mole of Fe produced. C. 53.2 kJ are released for every mole of Fe produced. D. 26.6 kJ are released for every mole of Fe produced. 5. Which statements are correct? 1. The activation energy of a reaction is not affected by temperature. I. A catalyst reduces the enthalpy change of a reaction. I. Catalysts provide alternative reaction pathways. A. I and Il only B. I and III only C. Il and III only D. I, Il and II Page 2 of 14
Transcribed Image Text:1:25 ul 4G ( Gym buddies HL_DP2.pdf Page 1 of 14 Section A 1. Which equation represents the bond enthalpy for the H-Br bond in hydrogen bromide? A. HBr(g)-H(g)+Br(g) B. HBr(g)-H(g)+Br(1) C. HBr(g)-H(g)+12B12(1) D. HBr(g)-H(g)+12B12(g) 2. Which process is endothermic? A. CH4(g)+202(g)-CO2(g)+2H2O(g) B. HCI(aq)+NaOH(aq)¬NaCI(aq)+H2O(I) C. CaCO3(s)-CaO(s)+CO2(g) D. H2O(g)-H20(1) 3. Hydrazine reacts with oxygen. N2Ha(l) + O2(g) → Na(g) + 2H2O(0) AH = -623 kJ What is the standard enthalpy of formation of NaH«(i) in kJ? The standard enthalpy of formation of H2O(1) is -286 kJ. A. -623 - 286 B. -623 + 572 C.-572 + 623 D. -286 + 623 4. Which statement is correct for this reaction? FezO3 (s) + 3CO (g) - 2Fe (s) + 3CO2 (g) AH = -26.6 kJ A. 13.3 kJ are released for every mole of Fe produced. B. 26.6 kJ are absorbed for every mole of Fe produced. C. 53.2 kJ are released for every mole of Fe produced. D. 26.6 kJ are released for every mole of Fe produced. 5. Which statements are correct? 1. The activation energy of a reaction is not affected by temperature. I. A catalyst reduces the enthalpy change of a reaction. I. Catalysts provide alternative reaction pathways. A. I and Il only B. I and III only C. Il and III only D. I, Il and II Page 2 of 14
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