Answer Happy

1) Carbon dioxide can be formed by the reaction of oxygen with carbon to form carbon monoxide, followed by the reaction of carbon monoxide with oxygen. Carbon dioxide can also be formed directly from carbon and oxygen. a) Study the figure below and determine the total change in enthalpy for the direct formation of carbon dioxide. Cs) + O2(g) AH =-110.5 kJ CO(g) + 20213) ΔΗ" AH = -283.0 kJ CO2(g)

b) Does the equation represent an endothermic reaction or an exothermic reaction? Justify your answer. c)What effect would this reaction have on the temperature of its surroundings? Compare the temperature of the surroundings before the reaction takes place to the temperature of the surroundings after the reaction takes place. d) What does the equation communicate about the relative energy of the chemical bonds in the reactants and products?