Question

Freediving is an activity in which a person dives, sometimes to great depth, without the use of scuba gear. The diver must hod his or her breath for the duration of the dive. (the record depth with no equipment such as diving fins, is 101m; the offical record time is over 11 minutes). historically freediving has been used by pearl divers and sponge divers. Some freedivers hyperventilate (breathe rapidly and deeply) before diving. hyperventilation can change the concentration of CO2 in the blood and may increase the length of time that a person feels like he/she can hold his/her breath. How does hyperventilation affect blood pH? a. it increases CO2 and decreases H+ in the blood, increasing pHb. it decreases CO2 and increases H+ in the blood, increasing pHc. it increases CO2 and H+ in the blood, decreasig pHd. it decreases CO2 and H+ in the blood, increasing pH

Answer 1

It decreases CO2 and H+ in the blood, increasing pH

Step-by-step explanation:

Carbon dioxide is removed from the body in exhaled air in the form of gas, while hyperventilation is going on, the volume of air inhaled and exhaled is greater than the normal, this will cause more Carbon dioxide

to be excreted out of the body altering the equilibrium between the bicarbonate ion and carbon dioxide:

Equation of the reaction:

CO2 + H2O ← H2CO3 ← H+ + HCO3

This favours the equilibrium change to the left, leading to an increase in a pH due to loss of H+.

I hope you find this information helpful! Good luck!