Carbon dioxide is carried to the lungs in the blood.When it is dissolved in water,an acid is created.How does the body prevent your blood from becoming too acidic on the way to the lungs?

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Quizplus · Accepted Answer

Buffers in the blood accept H+ ions (formed from the dissolved CO2) to prevent the blood from becoming too acidic. Specifically, the buffer system in the blood involves the bicarbonate ion (HCO3-) and carbonic acid (H2CO3), which can either accept or release H+ ions depending on the pH of the blood. By accepting H+ ions, the buffer system prevents the pH of the blood from dropping too low (becoming too acidic) as CO2 is carried to the lungs for exhalation.

Carbon Dioxide Is Carried to the Lungs in the Blood