Given the following reaction: $2C_2{H}_{6(g)}+7O_{2(g)}4C{O}_{2(g)}+6H_2{O}_{(g)}$

What is the $H_f$ of $C_2{H}_6?$

Is the $H_f$ of $C_2{H}_6$ always the same for any reaction involving $C_2{H}_6?$

What is the $H_f$ of the water vapor in the reaction?

Do the $H_f$ values indicate that $C_2{H}_6$ or water vapor is more stable at $25C?$

What is the $H_{rxn}$ for the reaction?

Does the $H_{rxn}$ indicate that there is more enthalpy in the products or the reactants?

Is the reaction endothermic or exothermic? How do you know?

Based on the enthalpy change alone, would you expect the reaction to be spontaneous at room temperature?