Answer:
2. 2F2O3 = 4Fe + 3O2
3. 2Na + Cl2 = 2NaCl
4. 2HgO = 2Hg + O2
5. TiCl4 + O2 = TiO2 + 2Cl2
6. 4Al + 3O2 = 2Al2O3
7. 2HCl + Zn = H2 + ZnCl2
8. 2Al + 3CuCl2 = 2AlCl3 + 3Cu.
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