1. Sodium hydroxide and hydrobromic acid

2. NaOH(aq)+HBr(aq)NaBr(aq)+H2O(l)

3. OH-(aq)+H+(aq)H2O(l)

4. Propane combusts

5. 2C4H10(g)+O2(g)8CO2(g)+ 10H2O(l)

6. 2C4H10(g)+O2(g)8CO2(g)+ 10H2O(l)

7. Potassium and water

8. 2K(s)+2H20(l)2KOH(aq)+H2(g)

9. 2K(s)+2H20(l)2K+(aq)+2OH-(aq) +H2(g)

10. Magnesium and hydrobromic acid

11. Mg(s)+2HBr(aq)MgBr2(aq)+H2 (g)

12. Mg(s)+2H+(aq)Mg2+(aq)+H2(g)

13. Copper and hydrobromic acid

14. Cu(s)+HBr(aq)no rxn

15. Cu(s)+HBr(aq)no rxn

16. Sodium carbonate decomposes

17. Na2CO3(aq)Na2O(aq)+CO2(g)

18. CO32-(g)O2-(g) + CO2(g)

19. Aluminum reacts with air

20. 4Al(s)+302(g)2Al2O3(s)

21. 4Al(s)+302(g)2Al2O3(s)

22. Hydrochloric acid and sodium carbonate

23. 2HCl(aq)+Na2CO3(aq)H2O(l)+ CO2(g)+2NaCl(aq)

24. 2H+(aq)+ CO32-(aq)H2O(l)+ CO2(g)

25. Iron(III) chloride and sodium hydroxide

26. FeCl3(s)+3NaOH(aq)3NaCl(aq) +Fe(OH)3(s)

27. Fe3+(s)+3OH-(aq)Fe(OH)3(s)

28. Lithium hydroxide and potassium chloride

29. LiOH(aq)+KCl(aq)no rxn

30. LiOH(aq)+KCl(aq)no rxn

31. Hydrobromic acid and potassium sulfide

32. HBr(aq)+K2S(aq)2KBr(aq)+H2S (g)

33. 2H+(aq) + S2-(aq) H2S(g)