In the reason it's written that CO2 is more soluble than Oxygen in water but how is it explaining the Assertion. Plz Answer.

Dear Student,

Carbon dioxide is mainly transported in the dissolved form in our blood. Since carbon dioxide is more soluble in water than oxygen that means carbon dioxide easily dissolves in blood (when compared to oxygen) as water is a major constituent of blood.

Haemoglobin transports oxygen molecules to all the body cells for cellular respiration. The haemoglobin pigment present in the blood gets attached to four O
molecules that are obtained from breathing. It thus forms oxyhaemoglobin and the blood becomes oxygenated. This oxygenated blood is then distributed to all the body cells by the heart. After giving away Oto the body cells, blood takes away COwhich is the end product of cellular respiration. Now the blood becomes de-oxygenated.

Since haemoglobin pigment has less affinity for CO2, CO2 is mainly transported in the dissolved form. This de-oxygenated blood gives COto lung alveoli and takes Oin return.

Fig: Transportation of O2 and CO2 in blood

 

Regards

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