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Unformatted text preview: s more B) 400 times more C) 4000 times more D) 10,000 times more E) 100,000 times more Problem Set 1 Chapters 1-4 BILD1 / Spring 2011 Dr. Kiger 16) One of the buffers that contribute to pH stability in human blood is carbonic acid (H2CO3). Carbonic acid is a weak acid that dissociates into a bicarbonate ion (HCO3-) and a hydrogen ion (H+). Thus, If the pH of the blood drops, one would expect ______ A) a decrease in the concentration of H2CO3 and an increase in the concentration of HCO3-. B) the concentration of hydroxide ion (OH-) to increase. C) the concentration of bicarbonate ion (HCO3-) to increase. D) the HCO3- to act as a base and remove excess H+ with the formation of H2CO3. E) the HCO3- to act as an acid and remove excess H+ with the formation of H2CO3. 17) Which property of the carbon atom gives it compatibility with a greater number of different elements than any other type of atom? A) Carbon forms ionic bonds. B) Carbon has six to eight neutrons. C) Carbon has a valence of 4. D) Only A and C are correct. E) A, B, and C are correct. 18) How many electron pairs does carbon share in order to complete its valence shell? A) 1 B) 2 C) 3 D) 4 E) 8 19) The carbon present in all organic molecules _______ A) is derived from carbon dioxide. B) is processed into sugars through photosynthesis. C) is incorporated into organic molecules by plants. D) two of the above. E) all of the above. 20) What is the reason why hydrocarbons are not soluble in water? A) The majority of their bonds are polar covalent carbon to hydrogen linkages. B) The majority of their bonds are non-polar covalent carbon to hydrogen linkages. C) They are hydrophilic. D) They are...
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- Spring '11