[References]Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and hydrogen are combusted, carbon dioxide and wate are theproducts. Using the enthalpies of combustion for C,H2 (-1300. kJ/mol), C2Hs (-1560. kJ/mol), and H2 (-286 kJ/mol), calculate AH for the reactionC2H2 (g) + 2H2 (g) C2H (g)AH=kJSubmit AnswerTry Another Version1 item attempt remainingPreviousNext8:33 P12/5/20aS 0 門thing

Enthalpies of combustion for each compound is given, writing down balanced equation for each compound (for 1 mol of reactant or product)C2H2 (g) + 52 O2(g) → 2 CO2 (g) + H2O (l) ΔH1 = -1300 kJC2H6 (g) + 72O2 (g) → 2 CO2 (g) + 3 H2O (l) ΔH2 = -1560 kJH2 (g) + 12O2 (g) → H2O (l) ΔH3 = -286 kJNow we need to perform some operations on this these 3 equations to get enthalpy for the final equation. Reverse the second equation,2 CO2 (g) + 3 H2O (l) → C2H6 (g) + 72O2 (g) ΔH2 = 1560 kJMultiply the third equation with 2,2 H2 (g) + O2 (g) → 2 H2O (l) ΔH3 = -572 kJ Now add equation 1 with modified equations 2 & 3, C2H2 + 52O2 + 2CO2 + 3 H2O + 2H2 + O2 → 2CO2 + H2O + C2H6 + 72O2 + 2H2O After solving this equation we will get,C2H2 (g) + 2 H2 (g) → C2H6 (g) ΔH = -1300 kJ + 1560 kJ + (-572) kJ = -312 kJTherefore ΔH for this reaction is -312 kJ

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Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and hydrogen are combusted, carbon dioxide and water are the products. Using the enthalpies of combustion for C2H2 (-1300. kJ/mol), C2He (-1560. kJ/mol), and H2 (-286 kJ/mol), calculate AH for the reaction C2 H2 (g) + 2H2 (g) C2H6 (g) AH = kJ

Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and hydrogen are combusted, carbon dioxide and water are the products. Using the enthalpies of combustion for C2H2 (-1300. kJ/mol), C2He (-1560. kJ/mol), and H2 (-286 kJ/mol), calculate AH for the reaction C2 H2 (g) + 2H2 (g) C2H6 (g) AH = kJ

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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