Lab #1 - was increasing and the other was decreasing. The...

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Sylwester Czado 9-20-07 BIO 244, Lab #1 TA: Shannon Gerry Acids, Bases, and Buffers Worksheet 1. Homeostasis is the maintenance of a stable internal environment. An example of homeostasis in the body is the control of glucose concentration. Insulin and glucagon regulate our blood glucose level at about 0.1%. These hormones are especially important between the periods of eating and digesting. 2. The pH scale is a measure of the concentration of H+ ions in a solution. It ranges from 0-14 with a pH of 7 being neutral. A pH below 7 is acidic and above 7 is basic. 3. A) Solution is neutral B) Solution is acidic C) Solution is basic 4. Blood pH must be kept within a range of 7.35-7.45 to prevent acidosis or alkalosis. If these conditions occurred in the blood then these two conditions would try to restore the blood pH to its normal range. Acidosis weakens all body systems. Alkalosis may lead to vomiting, nausea, and headache. Both conditions may result in death as well. 5. See attached graph 6. My results, according to the graph, produced two different kinds of lines. One line
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Unformatted text preview: was increasing and the other was decreasing. The Water/Base and Buffer/Base mixtures were increasing, while the Water/Acid and Buffer/Acid mixtures were decreasing. The pH of the Water/Acid mixture was the one that changed the most with its pH ranging from 8.92 to 2.78. 7. CO 2 builds up when you exercise because your muscles increase the oxidation of glucose. This produces more H+ ions in the muscles. This occurs because we need more oxygen in our body. CO 2 and H+ are produced during the breakdown of glucose. Then they are removed from the muscle through blood. 8. The difference between a strong and a weak acid is that a strong acid dissociates completely in aqueous solution. A weak acid does not dissociate completely, so some of the acid still remains in the solution. Also, the stronger the acid, the lower the pH is. For example, HCl had a pH of 1.80 in the lab which is strong....
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This note was uploaded on 04/30/2008 for the course BIO 244 taught by Professor Van sciver during the Fall '06 term at Rhode Island.

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Lab #1 - was increasing and the other was decreasing. The...

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