Reference no: EM132711713
Balancing Chemical Reactions Worksheet
Balance the following chemical reactions on a separate piece of paper. If already balanced write "balanced".
1. Mg (s) +O2 (8)→ MgO (s)
2. Al (s) + O2 (g) → AlO, (s)
3. HCI (aq) + Mg (s) → H2 (g) + MgCl2 (s)
4. H2SO4 (aq) + Zn (s) → H2 (g) + ZNSO, (s)
5. H2SO, (aq) + CACO, (s) → H20 (1) + CaSO4 (s) + CO2 (g)
6. HgO (s) → Hg (s) + O2 (g)
7. CUCO, (s) → CO2 (g) + CuO (s)
8. CuO (s) + HCI (aq) → CuCl2 (aq) + H2O (I)
9. Cu (s) + AgNO, (aq) → Ag (s) + CUNO, (aq)
10. AGNO, (aq) + NaCl (aq) → AgCl (s) + NaNO, (aq)
11. KOH (aq) + HCI (aq) → KCI (aq) + H2O (1)
12. NaOH (aq) + H2SO4 (aq) → H2O (1) + NazSO4 (aq)
13. Cl2 (g) + KBr (aq) → KCI (aq) + Br2 (1)
14. Al (s) + Brz () → AIBr, (s)
15. Na (s) + H20 (1) → NAOH (aq) + H2 (g)
16. Fe,O3 (s) + H2 (g) → Fe (s) + H20 (1)
17. CAOH (aq) + CO, (g) → H20 (1) + CACO, (s)
19. CuO (s) +C (s) → Cu (s) + CO (g)
21.Copper sulfate and sodium hydroxide when mixed together produce a precipitate of copper hydroxide and a solution of sodium sulfate.
22. Copper hydroxide when heated produces black copper oxide and steam(H,O).
23. Copper oxide when heated in the presence of hydrogen gas produces copper metal and water.
24. Sodium hydroxide reacts with a solution of ammonium chloride to produce ammonia gas, salt and water.
25. A mixture of sodium iodide and lead nitrate produces a solution of sodium nitrate and a precipitate.
26. The complete combustion of methane (CH,) produces carbon dioxide and water. Note: In a combustion reaction a fuel reacts with oxygen.
27. The combustion of ethanol, (C;H;OH) produces carbon dioxide and water
28. The combustion of glucose, (C,H1;O6) produces carbon dioxide and water
29. Barium hydroxide reacts with sulfuric acid to produce a white precipitate and water
30. A solution of mercury(I1) nitrate reacts with a solution of potassium iodide to produce a bright orange mercury(1I) iodide precipitate and a solution of potassium nitrate.
31. In the process of fermentation, yeast breakdown glucose molecules (C,H12O6) to produce ethanol(C,H,OH) and carbon dioxide gas.
32. In the process of photosynthesis, plants use carbon dioxide and water to make glucose(CH120.)
33.A solution of silver nitrate reacts with a solution of potassium phosphate to produces a yellow precipitate of silver phosphate and a solution of potassium nitrate.
34. Sodium hydrogen carbonate, NaHCO, and acetic acid react to produce carbon dioxide, water and sodium acetate, CH,COONA .
35, In the Haber process nitrogen and hydrogen combine to produce ammonia
36. In the Solvay process calcium carbonate and sodium chloride are used to produce calcium chloride and sodium carbonate via an indirect pathway.
37, Brown nitrogen dioxide gas(NO,) combines with water to produce a mixture of nitric acid and nitrous acid (HNO,).
38. Sodium oxide dissolves in water to produce a strong alkali solution Lithium hydroxide is used in space missions to remove carbon dioxide from the air.
39. Lithium carbonate and water are produced.
40. Colourless nitrogen monoxide(NO) combines with oxygen to produce brown nitrogen dioxide(NO,).