Hemoglobin (Hb) can react with both O2 and CO at 37 °C. The reaction below shows how CO can displace O2 from hemoglobin with a K = 2.0 x 102 :HbO2(aq) + CO(g) <===> HbCO(aq) + O2(g)If the ratio [HbCO]/[HbO2] comes close to 1, death will happen. What partial pressure of CO is fatal? Assume the partial pressure of O2 is 0.20 atm (since air is 20% O2).4×10−4atm1×10−3atm200 atm1000 atm0.2 atm

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Chapter17: Spontaneity, Entropy, And Free Energy

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Hemoglobin (Hb) can react with both O₂ and CO at 37 °C. The reaction below shows how CO can displace O₂ from hemoglobin with a K = 2.0 x 10²:

HbO_2(aq) + CO_(g) <===> HbCO_(aq) + O_2(g)

If the ratio [HbCO]/[HbO₂] comes close to 1, death will happen. What partial pressure of CO is fatal? Assume the partial pressure of O₂ is 0.20 atm (since air is 20% O₂).

4×10−4atm

1×10−3atm

200 atm

1000 atm

0.2 atm

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