7. Choose the best answer below. Which of the following statements is FALSE conc

Question

7. Choose the best answer below. Which of the following statements is FALSE concerning a deep-sea diver that is coming up from a depth where the total pressure is 3 atm to the surface where the total pressure is 1 atm? A) There is a greater concentration of dissolved oxygen in the diver's blood when below the surface, since the partial pressures of all gases increase as the total pressure increases B) As the diver comes up, the concentration of dissolved oxygen in the diver's blood decreases C) When the diver breathes pure oxygen at the surface before taking off the breathing apparatus, the solubility of oxygen is greater in the driver's to when the diver takes the breathing apparatus offand breaths regular air (~21% 02 by volume) D) As the diver comes up, the volume of the gases in the lungs decreases diver can calculate the solubility of oxygen if the partial pressure of exygen and the Henry's law constant (k) are known

Explanation / Answer

The false option is (D) As the diver comes up, the volume of the gases in the lungs decrease

Acccording to Boyle's Law, volume of gas is inversely proportional to pressure of gas.

This means lower the pressure, higher will be the volume

Now pressure at surface (1 atm) is less than pressure of depth (3 atm) and as the diver comes upto the surface from depth, the pressure decreases which means from Boyle's Law, volume should increase.

But in the option (D) it is given that volume decreases as pressure decreases upon coming to the surface

Hence option D is incorrect

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