A large volume of the CO2 in dissolved form is transported to the lungs from where it is emitted out of our body. almost x3 more CO2 in arterial blood than oxygen . Carbon dioxide molecules are transported in the blood from body tissues to the lungs by one of three methods: dissolution directly into the blood, binding to hemoglobin, or carried as a bicarbonate ion. CO2 is more soluble than O2 But CO2 also reacts with chemically with water. When referring to solubility in blood we mean basically solubility in water which(at 1 atmosphere) for oxygen is 9mg/L (miiligrams per litre) and for carbon dioxide it is much higher at 1450g/L so carbon dioxide is about 160 times more soluble than oxygen. Test Prep. The reason why CO2 is transported in the dissolved form in our body is due to the fact that the CO2 gas is more soluble in water which makes it easy for its movement unlike with oxygen where it has to work more to get dissolved. According to Henry's law, more is the partial pressure of a gas, greater is it's solubility in a fluid. Uploaded By sepumicy. When referring to solubility in blood we mean basically solubility in water which(at 1 atmosphere) for oxygen is 9mg/L (miiligrams per litre) and for carbon dioxide it is much higher at 1450g/L so carbon dioxide is about 160 times more soluble than oxygen. It doesnt have one because CO2 is much more soluble in blood than O2 is 9292018. Several properties of carbon dioxide in the blood affect its transport. How much more CO2 is there in arterial blood than O2 ? What is there more of in the blood CO2 or O2 ? There is much more CO2 in the blood than oxygen both more dissolved and more reacted chemically. As partial pressure of nitrogen in the atmosphere is more than helium, it is more soluble in blood than helium. CO2 is more soluble than O2 & an enzyme in blood quickly converts it into carbonic acid. 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