Respuesta :
The enthalpy change (ΔH°rxn) for the reaction is -2855.622 kJ/mol.
Enthalpy, a characteristic of a thermodynamic system, is the result of adding the internal energy of the system and the product of its pressure and volume. It is a state function that is frequently employed in measurements of chemical, biological, and physical systems at constant pressure, which the sizable surrounding environment conveniently provides.
Enthalpy(ΔH) is a state function:
ΔHreaction = ∑ΔHproducts - ΔHreactants
Therefore, The equation of the reaction:
2C₂H₆ (g) + 7O₂(g) -----> 4CO₂(g) + 6H₂O(g)
The enthalpy of each of the reactants and products is given below;
[C₂H₆ (g)] = −84.667 kJ/mol
[O₂ (g)] = 0 KJ/mol ( O2 exists in its standard state)
[CO₂(g)] = −393.5 kJ/mol
[H₂O(g)] = −241.826 kJ/mol
Hence;
ΔHreaction = ∑[4 × (−393.5) + 6 × (−241.826)] - [2 × (−84.667) + (7 × 0)]
ΔHreaction = -2855.622 kJ/mol
To know more about enthalpy refer to: https://brainly.com/question/1657608
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