MCAT Chemical and Physical Foundations of Biological Systems 12 — Flashcards | MCAT | FatSkills

MCAT Chemical and Physical Foundations of Biological Systems 12 — Flashcards

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The reaction of gaseous carbon dioxide and steam results in the formation of oxygen gas and acetylene gas. A balanced equation for this reaction is shown below:


CO2(g) + 2H2O(g) → 2C2H2(g) + 5O2(g)

ΔH values are provided for a series of related reactions:
C2H2(g) + 2H2(g) → C2H6(g) ∆H = –94.5 kJ
H2O(g) → H2(g) + 1/2O2(g) ∆H = –71.2 kJ
C2H6(g) + 7/2O2(g) → 2CO2(g) + 3H2O(g) ∆H = –283 kJ

1 of 5 Ready
What is the value of ΔH for the overall reaction of carbon dioxide with steam?
+470 kJ
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