What is the effect of `pCO_(2)` on oxygen transport?

Explanation

`pCO_(2)` plays an important role in the transportation of oxygen. At the alveolus, the low `pCO_(2)` and high `pO_(2)` favours the formation of haemoglobin. At the tissues, the high `pCO_(2)` and low `pO_(2)` favours the dissociation of oxygen from oxyhaemoglobin. Hence, the affinity of haemoglobin for oxygen is enhanced by the decrease of `pCO_(2)` in blood. Therefore, oxygen is transported in blood as oxyhaemoglobin and oxygen dissociates from it at the tissues.