You didn"t offer us the enthalpy of formation values that are found in the list of thermodynamic properties. I could look them up, but so might you. Below is just how to execute the difficulty once friend look increase those values.
You are watching: What is the heat of combustion of ethane, c2h6, in kilojoules per mole of ethane?
Write the well balanced equation for combustion of C2H6:
Look increase ∆Hformation for CO2(g) and also H2O(g) and also multiply the worth for CO2 by 4 and also that because that H2O by 6. Add these worths to get ∆Hproducts
Look increase ∆Hformation for C2H6 and also multiply by 2. The ∆H because that O2 is zero. Include these worths to get ∆H reactants.
Calculate ∆Hproducts - ∆Hreactants and also that will be your answer
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