1) The combustion reaction of carbon with oxygen to produce carbon dioxide is exothermic and releases 393.5 kJ of heat per mole of carbon dioxide produced. 2) The document provides information on heats of reaction, moles of reactants and products, molar masses, and specific heats of various substances. 3) Additionally, the document discusses endo- vs exothermic reactions, activation energies, and gives examples of common fuels and their energy contents.

1. ENERGY

24. Given
C(s) + O2(g) -----> CO2(g) H = -393.5 kJ
If you react ONE MOLE of Carbon with ONE MOLE of oxygen to
make one mole of carbon dioxide you will give off 393.5 KJ of heat.

25. Given
C(s) + O2(g) -----> CO2(g) H = -393.5 kJ
393.5 KJ
MOLE
1 MOLE
12 grams
4 grams
1

26. LAB

27. LAB

28. LAB

36. Endo or Exothermic?

37. Endothermic!

38. What is the activation energy for
this reaction?

39. What is the activation energy for
this reaction?

40. What is the H for
this reaction?

41. Fuels!!!
• Gasoline 11.3 kcal/g
• methane
• wood
• wax

42. Specific heats
• Substance C (J/g o
C)
• Air 1.01
• Aluminum 0.902
• Copper 0.385
• Gold 0.129
• Iron 0.450
• Mercury 0.140
• NaCl 0.864
• Ice 2.03
• Water 4.18