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1) C2H6 (g) —–> C2H4 (g) + H2 (g) ΔH1 = ? 2) C2H6 (g) +…

1) C₂H₆ (g) —–> C₂H₄ (g) + H₂ (g) ΔH₁ = ?

2) C₂H₆ (g) + 3.5O₂ (g) —–> 2CO₂ (g) + 3H₂O (l) ΔH₂ = -1560 kJ/mo

3) C₂H₄ (g) + 3O₂ (g) —–> 2CO₂ (g) + 2H₂O (l) ΔH₃ = -1411 kJ/mol

4) 2H₂O (l) —–> 2H₂ (g) + O₂ (g) ΔH₄ = 571.6 kJ/mol

How much heat is transferred between the system and the surroundings when 25 grams of ethane (C₂H₆) decomposes to produce ethylene (C₂H₄) and hydrogen gas? Is energy is released or absorbed by the system?

*** Hint: You will need to calculate ΔH₁ and use this value in your calculations to solve for this problem. ***

1) C₂H₆ (g) —–> C₂H₄ (g) + H₂ (g) ΔH₁ = ?

2) C₂H₆ (g) + 3.5O₂ (g) —–> 2CO₂ (g) + 3H₂O (l) ΔH₂ = -1560 kJ/mo

3) C₂H₄ (g) + 3O₂ (g) —–> 2CO₂ (g) + 2H₂O (l) ΔH₃ = -1411 kJ/mol

4) 2H₂O (l) —–> 2H₂ (g) + O₂ (g) ΔH₄ = 571.6 kJ/mol

Calculate ΔH_rxn for reaction (1) based on the given data. Is this reaction endothermic or exothermic?

science chemistry

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