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Part D What is the enthalpy for the overall reaction? Express your answer in kJ mol¬ to four significant figures. • View Available Hint(s) ?? H Hei Be A.H° = kJ mol-1 Submit

Part D What is the enthalpy for the overall reaction? Express your answer in kJ mol¬ to four significant figures. • View Available Hint(s) ?? H Hei Be A.H° = kJ mol-1 Submit

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Part D What is the enthalpy for the overall reaction? Express your answer in kJ mol- to four significant figures. • View Available Hint(s) (3 ED ? H Heli Be A¡H° = kJ mol-1 Submit
Transcribed Image Text:Part D What is the enthalpy for the overall reaction? Express your answer in kJ mol- to four significant figures. • View Available Hint(s) (3 ED ? H Heli Be A¡H° = kJ mol-1 Submit
Part A Ozone, O3, is destroyed when CIO levels are high. ClO is likely formed from the decomposition of chlorofluorocarbons (CFCS) in sunlight. Standard enthalpies of formation for selected substances are given in the table below. Calculate the standard enthalpy change of the reaction Substance (kJ mol-1) Express your answer in kJ mol-1 to four significant figures. ClO(g) 101.0 • View Available Hint(s) CIO2(g) 102.0 A.H° = -141.3 kJ mol-1 O(g) 247.5 O2(g) Submit Previous Answers O3(g) 142.3 v Correct Part B Calculate the standard enthalpy change of the reaction Express your answer in kJ molª to four significant figures. > View Available Hint(s) A,H° = -248.5 kJ mol-1 Previous Answers v Correct Part C Add the following reactions together: Identify which species cancel and which do not. Drag each item to the appropriate bin. Reset Help Cancels Does not cancel CIO, Am em rm oy o 2) O 3) Submit Previous Answers v Correct The overall reaction is then CLOtGT + Os(9) Cloto) + 0(g) → CIO-t) +O2(g) CLOtaJ +02(g) step1: step 2: overall: O3(9) + 0(g) + 202(g) ciO is a catalyst because it is consumed and then produced. CIO2 i a intermediate because it is produced and then consumed. Because the catalyst is re-formed in the second step, it can go on to react again and again.
Transcribed Image Text:Part A Ozone, O3, is destroyed when CIO levels are high. ClO is likely formed from the decomposition of chlorofluorocarbons (CFCS) in sunlight. Standard enthalpies of formation for selected substances are given in the table below. Calculate the standard enthalpy change of the reaction Substance (kJ mol-1) Express your answer in kJ mol-1 to four significant figures. ClO(g) 101.0 • View Available Hint(s) CIO2(g) 102.0 A.H° = -141.3 kJ mol-1 O(g) 247.5 O2(g) Submit Previous Answers O3(g) 142.3 v Correct Part B Calculate the standard enthalpy change of the reaction Express your answer in kJ molª to four significant figures. > View Available Hint(s) A,H° = -248.5 kJ mol-1 Previous Answers v Correct Part C Add the following reactions together: Identify which species cancel and which do not. Drag each item to the appropriate bin. Reset Help Cancels Does not cancel CIO, Am em rm oy o 2) O 3) Submit Previous Answers v Correct The overall reaction is then CLOtGT + Os(9) Cloto) + 0(g) → CIO-t) +O2(g) CLOtaJ +02(g) step1: step 2: overall: O3(9) + 0(g) + 202(g) ciO is a catalyst because it is consumed and then produced. CIO2 i a intermediate because it is produced and then consumed. Because the catalyst is re-formed in the second step, it can go on to react again and again.
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