Answer:
1. magnesium chloride is regenerated from magnesium hydroxide using hydrochloric acid: Mg(OH)2(s) + 2 HCl(aq) → MgCl2(aq) + 2 H2O(l) It can also be prepared from magnesium carbonate by a similar reaction.
2. 2Al + 3I2 → 2AlI3
3. CuCl2 + KOH → Cu(OH)2 + KCl
4. CuCO3 → CuO + CO2↑
5. Magnesium reacts with hydrochloric acid according to the equation: Mg(s) + 2 HCl(aq) --> MgCl 2(aq) + H 2(g) This demonstration can be used to illustrate the characteristic reaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas.
6. C4H10 + O2 = CO2 + H2O
7. Ba(OH)2 + HNO3 = Ba(NO3)2 + H2O
8. Zn + O2 = ZnO
9. Fe + CuSO4 = Fe2(SO4)3 + Cu
10. C3H8 + O2 = CO2 + H2O
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