Calculate the standards molar enthalpy of formation of CO2(g) in the reaction: C(g) +O2(g) CO2(g) Given the following standard enthalpy changes: 2C(s) +O2(g) 2CO(g), ΔHo = -221kJ 2CO(g) + O2(g) 2CO2(g), ΔHo = -566kJ

  • (A) -393.5 kJ
  • (B) +393.5 kJ
  • (C) +787.0 kJ
  • (D) -787.0 kJ;
Correct Answer: A

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