1. 2CH4O(l) + O2(g) → 2CH2O(l) + 2H2O(l)

  2. NH2Cl(g) → NH2Cl(aq)

  3. 2C8H14(l) + 23O2(g) → 16CO2(g) + 14H2O(l)

  4. H2SO4(aq) + CaCO3(s) → CaSO4(aq) + CO2(g) + H2O(l)

  5. Hg(l) → Hg(g)

  6. C16H30O2(s) + H2 → C16H32O2(s)

  7. CaO(s) + H2O(l) → Ca(OH)2(s)

  1. The sulfuric acid dissolved in raindrops of acid rain reacts with the calcium carbonate in seashells and marble structures. This reaction produces calcium sulfate dissolved in water and carbon dioxide gas.

  2. To balance the effect of acid rain, solid calcium oxide has been added to many lakes. It reacts with water to form solid calcium hydroxide, a strong base that is only slightly soluble in water.

  3. Chloramine is added to our water supply in very small amounts to kill bacteria.

  4. When octane and oxygen gas are burned in our cars, carbon dioxide and water come out in the exhaust.

  5. Methanol, if ingested, reacts with oxygen to form formaldehyde, which is toxic. Water is also formed in this reaction.

  6. Liquid mercury evaporates to produce mercury vapor.

  7. Saturated fatty acids, like palmitic acid, tend to form long solids and clog people's arteries. These saturated fatty acids can be made from unsaturated fatty acid by adding hydrogen gas.