Standard enthelpy of formation of carbon gas

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SUMMARY

The standard enthalpy of formation for carbon gas (C(g)) is definitively 716.7 kJ, derived from the reaction C(graphite) → C(g) with a corresponding enthalpy change (ΔH) of 716.7 kJ. This indicates that adding 716.7 kJ to 1 mole of graphite will yield carbon gas. It is crucial to note that carbon gas exists only at a temperature of 4827.0 °C, and the addition of energy does not directly equate to temperature increase.

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mcfaker
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Hi,

The standard enthalpy of formation of carbon gas or C(g) is the enthalpy change for the formation of 1 mole of carbon gas from its elements in their reference form which for carbon (I believe) is C(graphite).

Now I find the following standard enthalpy of formation for carbon gas / C(g) : 716.7 kJ

So now the formation reaction(or thermochemical equatation) is:

C(graphite) → C(g) ΔH= 716.7 kJ

Am I right? So if we add 716,7kJ to 1 mole of graphite ( note: not diamond) we will get carbon gas? Now carbon gas only excists at a temperature of 4827.0 °C so that means if we add 716.7 kJ it will increase the temperature up to 4827.0 °C?


Thanks in advance!
 
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