Tuesday
September 30, 2014

Homework Help: chem

Posted by marie on Saturday, April 16, 2011 at 8:09pm.

please help me? :)

topic: standard enthalpies of formation

"Calculate ΔHf° of octane, C8H18(l), given the entalpy of combustion of octane to CO2(g) and H2O(l) is -5471kJ/mol. The standard enthalpies of formation ofCO2 and H2O are given: CO2(g)ΔHf°=-393.5kJ/mol and H2O(l) ΔHf°=-285.8kJ/mol"

I'm not really sure how to go about this... do I use ΔHrxn°= (sum)nΔHf°prod - (sum)mΔHf°reactant ? Also, can you go through this with me step by step if need be? Thank you for your time!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - Octane (C8H18) undergoes combustion according to the following ...
Gen Chem - If the standard enthalpy of combustion of octane, C8H18(l) is -5471 ...
Chemistry - If the standard enthalpy of combustion of octane, C8H18(l) is -5471 ...
chem - The complete combustion of octane, C8H18, the main component of gasoline...
combustion - The heat of formation of gaseous octane (C8H18(g)) is -49.79 kcal/...
Chemistry - equilibrium expression for the combustion of octane? My project is ...
chemistry - Calculate the heat of formationof benzene if the heat of combustion ...
science - 2H2(g) + O2(g) = 2H2O (l) Calculate the volume of Hydrogen gas at STP ...
Chemistry - The enthalpy change in the combustion of the hydrocarbon octane is ...
Chemistry Octane Combustion - Write the balanced equation for the combustion of ...

Search
Members