ane (C8H18) is a component of gasoline and combusted ac

Chemistry & Chemical Reactivity
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Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
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Octane (CgH18) is a component of gasoline and combusted according to the reaction
below. Is the reaction exothermic or endothermic and what is the change in heat energy if
34.5 g of octane is combusted with excess oxygen? (Note: the molar mass of octane is
114.2 g/mol)
2C3H18 (1) + 2502 (g) → 16CO2 (g) + 18H2O (g) AH= -10860 kJ
endothermic, -3280 kJ
exothermic, -10860 kJ
O exothermic, -3280 kJ
O endothermic, -1640 kJ
exothermic, -1640 kJ
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Transcribed Image Text:Octane (CgH18) is a component of gasoline and combusted according to the reaction below. Is the reaction exothermic or endothermic and what is the change in heat energy if 34.5 g of octane is combusted with excess oxygen? (Note: the molar mass of octane is 114.2 g/mol) 2C3H18 (1) + 2502 (g) → 16CO2 (g) + 18H2O (g) AH= -10860 kJ endothermic, -3280 kJ exothermic, -10860 kJ O exothermic, -3280 kJ O endothermic, -1640 kJ exothermic, -1640 kJ df journal.part3 (1).docx journal.part3.docx to search
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