Question

The molecular weight of hemoglobin is 64,500 daltons (= g mol-1).

a. how much oxygen can be bound per g of hemoglobin? express the values as ml per g of hemoglobin, where ml is the volume of o2. r =0.082 l atm mol-1 ok-1, ok =273 + oc. the molar volume of o2 is given as v = nrt/p where p = 1 atm and n= 1 mol; (hint: 1.0 mol x 0.082 l atm mol-1 ok-1 x 273.2 ok / 1 atm = 22.4 l mol-1)

Answer 1

Thus, one gram of Hemoglobin carries 1.389 mL of oxygen.

Step-by-step explanation:

Each hemoglobin molecules carries 4 oxygen molecules.

Given that the molar mass of hemoglobin = 64,5000 g/mol

1 gram of hemoglobin =
`(1)/(64500)moles`

Now, no of moles of oxygen carried in 1 mole of hemoglobin =
`(1)/(64500)* 4 \ \ moles`

=
`6.2016*10^(-5)` moles

assuming the oxygen is to be an ideal gas; then:

PV = nRT

`V =(nRT)/(P)`

Given that :

`(RT)/(P)= 22.4 \ L/mol`

Then V =
`6.2016*10^(-5)`
`*22.4 *1000 \ mol`

V = 1.389 mL

Thus, one gram of Hemoglobin carries 1.389 mL of oxygen.