Acid and Base Solutions - Acid and Base Solutions David...

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Acid and Base Solutions David Mulkey 2/23/2011 Chemistry 118 Section M3
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Group Members: Stephan Real and Justin Pollock 1. Water: a. Based on the observations made during the experiment the difference between tap water and distilled water was that tap water had a pH of 6.9 while distilled water had a pH of 7.37. b. The pH of distilled water should be completely neutral: ([H+] = [OH-]) with a pH of 7 while the pH of tap water varies from a pH range of 6-8. So, our results agree with the pH of tap water, but they were slightly off for the pH of the distilled water which could have resulted from contamination of the beaker that we put the distilled water in to be tested or from the pH meter not being set as precisely and accurately as it should have been. c. Tap water does not go through the same purification process as distilled water. Tap water, which is not highly purified, can contain trace amounts of substances like salts, nitrates, chloride, calcium, iron, fluoride, and micro-organisms, as long as the amounts meet government regulations. One way to remove these elements from water is to boil it until it changes to steam, a process known as distillation. Distilled water comes from recondensed steam. When this steam is allowed to cool down and condense into liquid form again, the result is a purified form called distilled water. Distilled water should ideally be nothing but hydrogen and oxygen molecules, with a PH level of 7 and no additional gases, minerals or contaminants. Distilled water is beneficial since it contains
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Acid and Base Solutions - Acid and Base Solutions David...

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