Reference no: EM132363012
Q1 (d) State at least two limitations/assumptions in this method of estimating the O2 requirements.
Q2 (b) What happens to the ratio of oxygenated HbO2(aq) to deoxygenated Hb(aq), i.e. , when there is a very low pressure of oxygen, PO2(g), in the lungs?
Q3. The magnitude of K is critical for O2 to be pass first from lungs into red blood cells and then subsequently into the tissues.
(a) If K was very small, would the equilibrium favour reactants or products in the above reaction?
How would that affect the proportion of oxygenated HbO2(aq) to deoxygenated Hb(aq) in blood leaving the lungs?
(b) Now consider the situation in the tissues of the body that rely on diffusion of oxygen from the bloodstream. If K was very large, how would that affect the amount of oxygen passing from blood into the tissues? (hint: Consider whether the forward or reverse reaction is required now)
Q4. The equilibrium constant, K, for binding of haemoglobin for carbon monoxide, CO, is about 200-300 times greater than for O2. Explain using chemical equilibrium principles why this makes breathing CO hazardous.