Answer the following questions based on the reading in Article 2!
1. Does the formation of salt (NaCl) involve an exchange of energy?
2. Which reaction shows the decomposition of a compound into its elements?
3. Why does the decomposition of HgO require heating?
4. If the decomposition of HgO is carried out by combustion using wood fuel, what is the reaction equation? Explain what type of enthalpy this reaction belongs to.
5. Berdasarkan sifat pertukaran energinya, reaksi penguraian HgO dan pelarutan garam NaCl, manakah reaksi yang bersifat eksotermik dan endotermik?
6. Berdasarkan reaksi penguraian HgO, bagaimana pengertian dari entalpi dekomposisi? Gunakan referensi yang ada untuk menjawab!
7. Berdasarkan proses pelarutan NaCl, bagaimana pengertian dari entalpi pelarutan?
Write down your conclusion based on your answers!