Use the following thermochemical equations to determine the heat of formation of diamond C diamond + O2(g) 2C0 +0 C 2(g) 2(g) graphite 200 (g) CO2(g) 2C0 +0 → CO 2(g) → C 2(g) +0 2(g) graphite + CO 2(g) AH = -395.4 kJ _0 AH = 566.0 kJ ₂0 ΔΗ = -393.5 kJ AH = -172.5 kJ
Use the following thermochemical equations to determine the heat of formation of diamond C diamond + O2(g) 2C0 +0 C 2(g) 2(g) graphite 200 (g) CO2(g) 2C0 +0 → CO 2(g) → C 2(g) +0 2(g) graphite + CO 2(g) AH = -395.4 kJ _0 AH = 566.0 kJ ₂0 ΔΗ = -393.5 kJ AH = -172.5 kJ
Chapter6: Thermochemistry
Section: Chapter Questions
Problem 77E: Give the definition of the standard enthalpy of formation for a substance. Write separate reactions...
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Transcribed Image Text:2. Use the following thermochemical equations to determine the heat of formation of
diamond
+ 0 → CO
2(g)
C
diamond
2(g)
2CO +0 → 2CO +0.
2(g) 2(g)
(9)
2(g)
+0₂ → CO
graphite 2(g)
2C0
→ C
(9)
2(g)
graphite
+ CO.
2(g)
AH = -395.4 KJ
AH = 566.0 kJ
AH = -393.5 kJ
AH
= -172.5 kJ
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