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Chemical Equations Review Sheet 2 1. Potassium metal reacts with liquid bromine: 2K(s) + Br2(l) 2KBr(s) synthesis 2. Water undergoes electrolysis: 2H2O(l) 2H2(g) + O2(g) decomposition 3. Aluminum metal reacts with oxygen gas: 4Al(s) + 3O2(g) 2Al2O3(s) synthesis 4. Liquid butane, C4H10, undergoes combustion: 2C4H10(l) + 13O2(g) 8CO2(g) + 10H2O(g) combustion 5. A sample of iron reacts with chlorine gas: Fe(s) + Cl2(g) FeCl2(s) OR synthesis 2Fe(s) + 3Cl2(g) 2FeCl3(s) 6. A sample of sodium carbonate is heated: Na2CO3(s) Na2O(s) + CO2(g) decomposition 7. Potassium reacts with hydrogen gas 2K(s) + H2(g) 2KH(s) synthesis 8. A sample of molten magnesium chloride undergoes electrolysis: MgCl2(l) Mg(s) + Cl2(g) decomposition 9. Propanol, C3H7OH, undergoes combustion: C3H7OH(l) + 5O2(g) 3CO2(g) + 4H2O(g) combustion 10. A sample of lithium chlorate is heated: 2LiClO3(s) 2LICl(s) + 3O2(g) decomposition 11. A sample of tin(II)carbonate is heated: SnCO3(s) SnO(s) + CO2(g) decomposition 12. methane, CH4, undergoes combustion: CH4(g) + 2O2(g) CO2(g) + 2H2O(g) combustion 13. Aluminum reacts with sulfur: 2Al(s) + 3S(s) Al2S3(s) synthesis 14. A sample of molten aluminum chloride undergoes electrolysis: 2AlCl3(l) 2Al(s) + 3Cl2(g) decomposition 15. A sample of calcium chlorate is heated: Ca(ClO3)2(s) CaCl2(s) + 3O2(g) decomposition