Part 2: Enthalpy of Iron with vinegar reaction Table 8.2: Temperatures of the Iron reaction. 4. Did the temperature go up or down? How much?

5. Is this an exothermic or endothermic reaction?

6. Think of some other chemical reactions. List them and the type of reaction: exothermic or endothermic Example: Burning coal - exothermic

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .