According to the chemical reac - tion, if there are 4.5 mol of oxy - genated hemoglobin present in an excess of carbon monoxide, how many moles of hemoglobin would release oxygen and bind to carbon monoxide?

Question

Maurice Cunningham

Chemistry

3 December, 18:05

According to the chemical reac - tion, if there are 4.5 mol of oxy - genated hemoglobin present in an excess of carbon monoxide, how many moles of hemoglobin would release oxygen and bind to carbon monoxide?

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Isabela Knox · Answer 1

A single molecule of hemoglobin can bind to 4 molecules of oxygen gas. However, hemoglobin has a greater affinity for carbon monoxide than oxygen. Therefore, an excess of carbon monoxide in the presence of oxygenated hemoglobin will result in the displacement of each oxygen atom for a carbon monoxide atom.

Hb (O2) 4 (aq) + 4 CO (g) - - > Hb (CO) 4 (aq) + 4 O2 (g)

With an excess of carbon monoxide, it is safe to assume that each oxygen molecule will be displaced with a carbon monoxide molecule. Therefore, if we have 4.5 moles of oxygenated hemoglobin (Hb (O2) 4), all 4.5 moles of the species will release oxygen and bind to carbon monoxide.