| Exothermic Salt | |
| NaC2H3O2 (sodium acetate) –17 kj/mole | |
| CaCl2 (calcium chloride) –81 kj/mole | |
| Endothermic Salt | |
| NH4NO3 (ammonium nitrate) + 25.7 kj/mole | |
| KNO3 (potassium nitrate) + 34.9 kj/mole | |
Writing 1-1.5 page paper: Make sure you cover all this important points mentioned below:
Use data collected in the tables above to write an argumentation paragraph explaining why sodium acetate and ammonium nitrate are used in commercial hot and cold packs.
Write just an argument for why each salt (sodium acetate and ammonium nitrate) is used commercially. Your data is just one piece of information to consider, other factors to consider are solubility, toxicity, safety and cost (a quick web search will provide this information).
