2 C (s graphite) + 1 O2 (g) → 2 CO (g)

Back to reactions list

 

Reaction Type:

Synthesis

Stoichiometry

Enter a mass or volume in one of the boxes below. Upon hitting submit, the stoichiometric equivalents will be calculated for the remaining reactants and products. All gases are assumed to be at STP.

C              Mass: g
O2             Mass: g  or Gas Volume: L
CO             Mass: g  or Gas Volume: L
Heat Released: kJ

Enthalpy of Reaction

[2ΔHf(CO (g))] - [2ΔHf(C (s graphite)) + 1ΔHf(O2 (g))]
[2(-110.54)] - [2(0) + 1(0)] = -221.08 kJ
-221.08 kJ     (exothermic)

Entropy Change

[2ΔSf(CO (g))] - [2ΔSf(C (s graphite)) + 1ΔSf(O2 (g))]
[2(197.9)] - [2(5.69) + 1(205.03)] = 179.39 J/K
179.39 J/K     (increase in entropy)

Free Energy of Reaction (at 298.15 K)

From ΔGf° values:
[2ΔGf(CO (g))] - [2ΔGf(C (s graphite)) + 1ΔGf(O2 (g))]
[2(-137.28)] - [2(0) + 1(0)] = -274.56 kJ
-274.56 kJ     (spontaneous)

From ΔG = ΔH - TΔS:
-274.57 kJ     (spontaneous)

Equilibrium Constant, K (at 298.15 K)

1.269133806e+048
This process is favorable at 25°C.

Reference(s):

Ebbing, Darrell D. General Chemistry 3rd ed.; Houghton Mifflin Company: Boston, MA, 1990; pp 138, 204.
Swaddle, T.W. Inorganic Chemistry; Academic Press: San Diego, 1997; p 372.
Kotz, John C. and Treichel, Paul. Chemistry & Chemical Reactivity 4th ed.; Thomson Brooks/Cole: Belmont, CA, 1999; p 157.

Back to list of reactions