At 37 C and 760 mm Hg pressure, 0.023 ml of O2 can be dissolved ...

[geodog55]

At 37 C and 760 mm Hg pressure, 0.023 ml of O2 can be dissolved in 1 ml of plasma, whereas at the same temperature and pressure, 0.510 ml of CO2 will dissolve in 1 ml of plasma. What ex-plains this difference?
 
  a. CO2 diffuses more rapidly than O2.
  b. CO2 is more soluble in plasma than O2.
  c. CO2 has a greater molecular weight than O2.
  d. O2 has less affinity for plasma than CO2.

Question 2

Which of the following will occur when a gas undergoes expansion? 1. The pressure of the gas increases. 2. Molecular collisions decrease. 3. The gas temperature increases.
 
  a. 1 and 2 only
  b. 2 and 3 only
  c. 2 only
  d. 1 and 3 only

[stallen]

Answer to Question 1

ANS: B
For example, the solubility coefficient of O2 in plasma, at 37 C and 760 torr pressure, is 0.023 ml/ml. Under the same conditions, 0.510 ml of CO2 can dissolve in 1 ml of plasma.

Answer to Question 2

ANS: C
If a gas-filled container could be enlarged, the gas would expand to occupy the new volume. Figure 6-19 illustrates the concepts of gas compression and expansion.