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5) The table below shows AHvalues for 3 reactions. Reaction DHran 1 C,H;(g) + 5/2 0,(g) → 2CO;(g) + H,O(1) -1300.0 kJ/mol C(s) + O2(g) → CO,(g) -393.5 kJ/mol 2H,(g) + O(g) → 2H,0(1) -572.0 kJ/mol a) Which reaction has AHrxn equal to AHf? Explain. b) How much energy would be released by the combustion of 100.0 grams C,H,(g)? c) Calculate the DHrxn for the reaction C,H,(g) → 2C(s) + H¿(g). 2. 3.

5) The table below shows AHvalues for 3 reactions. Reaction DHran 1 C,H;(g) + 5/2 0,(g) → 2CO;(g) + H,O(1) -1300.0 kJ/mol C(s) + O2(g) → CO,(g) -393.5 kJ/mol 2H,(g) + O(g) → 2H,0(1) -572.0 kJ/mol a) Which reaction has AHrxn equal to AHf? Explain. b) How much energy would be released by the combustion of 100.0 grams C,H,(g)? c) Calculate the DHrxn for the reaction C,H,(g) → 2C(s) + H¿(g). 2. 3.

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
Chapter6: Thermochemistry
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Problem 105AE: Combustion of table sugar produces CO2(g) and H2O( l). When 1.46 g table sugar is combusted in a...
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5) The table below shows AHvalues for 3 reactions. Reaction 1 C;H;(g) + 5/2 O2(g) → 2CO,(g) + H;O(1) -1300.0 kJ/mol C(s) + O2(g) → CO:(g) -393.5 kJ/mol 3 2H;(g) + O2(g) → 2H,O(1) -572.0 kJ/mol a) Which reaction has AHrxn equal to AHf? Explain. b) How much energy would be released by the combustion of 100.0 grams C,H2(g)? c) Calculate the DHrxn for the reaction C,H;(g) → 2C(s) + H2(g).
Transcribed Image Text:5) The table below shows AHvalues for 3 reactions. Reaction 1 C;H;(g) + 5/2 O2(g) → 2CO,(g) + H;O(1) -1300.0 kJ/mol C(s) + O2(g) → CO:(g) -393.5 kJ/mol 3 2H;(g) + O2(g) → 2H,O(1) -572.0 kJ/mol a) Which reaction has AHrxn equal to AHf? Explain. b) How much energy would be released by the combustion of 100.0 grams C,H2(g)? c) Calculate the DHrxn for the reaction C,H;(g) → 2C(s) + H2(g).
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