Question

when co₂ levels in the blood increase, the multiple choice number of hydrogen ions in the blood decreases. ph of the blood increases. condition is called hypocapnia. blood becomes more alkaline. blood becomes more acidic.

Explanation:

When carbon - dioxide ($CO_2$) levels in the blood increase, $CO_2$ reacts with water ($H_2O$) in the blood to form carbonic acid ($H_2CO_3$), which then dissociates into hydrogen ions ($H^+$) and bicarbonate ions ($HCO_3^-$). An increase in hydrogen ions means a decrease in pH, making the blood more acidic. Hypocapnia is low $CO_2$ levels. An increase in $CO_2$ leads to an increase in hydrogen ions, a decrease in pH, and a more acidic blood environment.

Answer:

blood becomes more acidic.