Bio Lab Exercise 1
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Distilled water is:
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Neutral
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What pH did you estimate for distilled water using the pHydrion paper?
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7
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Here is data collected that present the white blood cell counts of your patients. Table. White Blood Cell Counts of 10 Patients Reported in number of WBC/mm^3 Patient A 7,500 Patient B 10,400 Patient C 4,700 Patient D 5,600 Patient E 15,000 Patient F 4,000 Patient G 8,700 Patient H 9,400 Patient I 6,300 Patient J 5,400 If Total White Blood Cell Counts in the range of 4,000-11,000 are considered normal, how many of your patients have an abnormally high or an abnormally low count (i.e. fall outside the normal range)?
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1
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What is the mean white blood cell count of your 10 patients. Watch significant digits in your answer.
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7,700
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The normal range of white blood cell counts is 4,000 to 11,000. If a patient has a white blood cell count above 11,000, which of the following is most likely?
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3,310
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Ammonia is a
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Base
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What pH did you estimate for ammonia using the pHydrion paper?
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Answer Range (7.0 - 11.0)
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Aspirin is an
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Acid
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What pH did you estimate for aspirin using the pHydrion paper?
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Answer range (3.0 - 5.0)
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What is the active ingredient of aspirin that would provide clues about its classification by pH (acid, base, neutral)?
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Salicylic Acid
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Baking soda is:
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A weak base
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What pH did you estimate for baking soda using the pHydrion paper?
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8
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What is the chemical in baking soda that serves as a buffer?
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HCO3-
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When you collect data, you can compare and contrast results. Based on your results, which of the following is the strongest base?
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Ammonia
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Which of the following substances has the highest hydrogen ion concentration? -sodium bicarbonate -vinegar -tomato juice -ammonia -NaCl
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Vinegar
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Lime Juice is a
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Acid
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What pH did you estimate for lime juice using the pHydrion paper?
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Answer range (1.5 - 3.5)
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Lime juice contains which organic acid?
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Citric Acid
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Milk is:
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A Weak acid
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What pH did you estimate for milk using the pHydrion paper?
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Answer range (5.0 - 7.0)
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Salt (NaCl) is:
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Neutral
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What pH did you estimate for salt using the pHydrion paper?
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Answer range (6.0 - 8.0)
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Soda (cola) is:
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An Acid
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What pH did you estimate for soda (cola) using the pHydrion paper?
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Answer range (2.0 - 4.0)
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Soda (cola) is highest in which acid?
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A phosphoric Acid
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Tomato juice is
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An Acid
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What pH did you estimate for tomato juice using the pHydrion paper?
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Answer range (3.0 - 5.0)
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Urea is
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An Acid
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What pH did you estimate for urea using the pHydrion paper?
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Answer range (6.0 - 8.0)
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Vinegar contains which organic acid?
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Acetic Acid
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Vinegar is
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An Acid
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What pH did you estimate for vinegar using the pHydrion paper?
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Answer range (1.5 - 3.5)
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What is the pH of human blood?
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Answer range (7.2 - 7.6)
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What is the average pH of human urine?
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Answer range (4.3 - 8.3)
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The human stomach has a pH of:
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Answer range (1.0 - 4.0)
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Human saliva has a pH of:
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Answer range (6.0 - 8.0)
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The duodenum is the first section of the small intestine where the contents of the stomach are mixed with digestive enzymes from the pancreas and the intestinal epithelium. What is the normal pH of the duodenum?
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Answer range (5.7 - 9.7)
