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1. Calculate the heat of hydrogenation of ethane (C2H6) given the following thermochemical equations: a. 20 (graphite) + 3 H2 (g)-> C2H6 (g) AHfo = - 84.5 kJ/mol b. 2C (graphite) + 2 H2 (g)-> C2H4 (g) AHfo = 52.3 kJ/mol

1. Calculate the heat of hydrogenation of ethane (C2H6) given the following thermochemical equations: a. 20 (graphite) + 3 H2 (g)-> C2H6 (g) AHfo = - 84.5 kJ/mol b. 2C (graphite) + 2 H2 (g)-> C2H4 (g) AHfo = 52.3 kJ/mol

Chemistry
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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depend on the path Activity 3: LET'S CALCULATE! Directions: Solve the following problems completely. 1. Calculate the heat of hydrogenation of ethane (C2H6) given the following thermochemical equations: a. 20 (graphite) + 3 H2 (g) -> C2H6 (g) AHfo = - 84.5 kJ/mol b. 2C (graphite) + 2 H2 (g) -> C2H4 (g) AHfo = 52.3 kJ/mol 2. Find the AH for the reaction below, given the following reactions and subsequent AH values: 2C2(g) + H2O(g)- C2H2(g) + 5/2 2(g) AH = -94.5 kJ C2H2(g) + 2H2(g) C2H6(g) AH =71.2 kJ H20(g)→ H2(g) + ½ O2 (g) AH = -283 Kj C2H6(g) + /2 O2(g)→2 CO2(g) + 3 H20(g)
Transcribed Image Text:depend on the path Activity 3: LET'S CALCULATE! Directions: Solve the following problems completely. 1. Calculate the heat of hydrogenation of ethane (C2H6) given the following thermochemical equations: a. 20 (graphite) + 3 H2 (g) -> C2H6 (g) AHfo = - 84.5 kJ/mol b. 2C (graphite) + 2 H2 (g) -> C2H4 (g) AHfo = 52.3 kJ/mol 2. Find the AH for the reaction below, given the following reactions and subsequent AH values: 2C2(g) + H2O(g)- C2H2(g) + 5/2 2(g) AH = -94.5 kJ C2H2(g) + 2H2(g) C2H6(g) AH =71.2 kJ H20(g)→ H2(g) + ½ O2 (g) AH = -283 Kj C2H6(g) + /2 O2(g)→2 CO2(g) + 3 H20(g)
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