Topic: Determining standard enthalpy of formation / combustion from standard internal e (Read 1353 times)

zeetya · « **on:** July 08, 2021, 01:09:49 AM »

I'm given a standard specific internal energy of combustion of fullerene as -36kJ/g at 25°C, how do I find standard enthalpy of formation and combustion of fullerene? Thank you!

I have tried using ΔU = ΔH + PV to determine the enthalpy but I'm unsure as to how to determine P (which I assume is 1atm) and especially V. Should I express the reaction as C₆₀ + 60O₂ --> 60CO₂ or as C + O₂ --> CO₂?

Borek · « **Reply #1 on:** July 08, 2021, 02:51:16 AM »

Quote from: zeetya on July 08, 2021, 01:09:49 AM

standard specific internal energy of combustion

I don't think I have ever heard such a term.

zeetya · « **Reply #2 on:** July 08, 2021, 02:58:09 AM »

Quote from: Borek on July 08, 2021, 02:51:16 AM

Quote from: zeetya on July 08, 2021, 01:09:49 AM
standard specific internal energy of combustion

I don't think I have ever heard such a term.

I suppose it's just internal energy measured against mass at standard conditions, it says 25C but i thought standard conditions was 0C but i think the question means stay at 25C.

Topic: Determining standard enthalpy of formation / combustion from standard internal e (Read 1353 times)

zeetya

Determining standard enthalpy of formation / combustion from standard internal e

Borek

Re: Determining standard enthalpy of formation / combustion from standard internal e

zeetya

Re: Determining standard enthalpy of formation / combustion from standard internal e

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