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Author Question: Which of the following are components of the body's nonbicarbonate buffer system? 1. Hemoglobin 2. ... (Read 59 times)

joesmith1212

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on: Jul 16, 2018
Which of the following are components of the body's nonbicarbonate buffer system? 1. Hemoglobin 2. Plasma proteins 3. Organic phosphates 4. Inorganic phosphates
 
  a. 1, 2, and 3 only
  b. 2 and 4 only
  c. 3 only
  d. 1, 2, 3, and 4

Question 2

When a strong acid is added to the bicarbonate buffer system, what is the result?
 
  a. Strong base and neutral salt
  b. Strong acid and neutral salt
  c. Weak acid and neutral salt
  d. Weak acid and basic salt


Tabitha_2016

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
The nonbicarbonate buffer system consists mainly of phosphates and proteins, including hemo-globin.

Answer to Question 2

ANS: C
If hydrogen chloride, a strong acid, is added to the H2CO3/NaHCO3 buffer solution, HCO3 ions react with the added H+ ions to form weaker carbonic acid molecules and a neutral salt:
HCl + H2CO3/Na+HCO3 2H2CO3 + NaCl
The strong acidity of HCl is converted to the relatively weak acidity of H2CO3, preventing a large decrease in pH.


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