Calculate the free energy change, dG Solution C (graphite) + O2 (g) ---> CO2 (g)

Question

Explanation / Answer

C (graphite) + O2 (g) ---> CO2 (g) dG°= -394.4 kJ 2H2 (g) + O2 (g) ---> 2H2O (l) dG°= -474.4 kJ CH3CH2CH3 (g) + 5O2 (g) ---> 3CO2 (g) + 4H2O (l) dG°= -2260. kJ Now multiplying equation 1 with 3 and reversing it 3CO2 (g) --------> 3C + 3O2 dG°= 1183.2 kJ equation 2 with 2 and reversing 4H2O ----> 4H2 + 2O2 dG°= 948.4 kJ now adding equation 4, 5 and 3 you get 3CO2 + 4H2O + propane +5O2 -----> 3C + 5O2 +3CO2 + 4H2O + 4H2 dG = 948.4+1183.2 -2260 KJ = -128.4 KJ you get CH3CH2CH3 ---> C + H2 dG = -128.4 KJ hence C + H2 -----> propane dG = 128.4 KJ

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.