CHM 111 Lecture Notes - Lecture 22: Equilibrium Constant, Spectrophotometry, Hemoglobin
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Hemoglobin equilibrium system: hemoglobin: protein in red blood cells that reacts with o2. Dynamic equilibrium: a reaction that goes both ways. Hb, o2 , and hbo2 have interdependent concentrations: equilibrium constant: the concentration of each product at equilibrium. Hb and o2 relationship = combine making more hbo2. Hb and o2 relationship = breaks down hbo2. Oxygen exchange between mother and fetus: kfetal > kmother, fetuses have a higher hemoglobin equilibrium constant than the mother, o2 is transferred from the mother to the fetus through the placenta. Change in concentration: as reactant decreases, product increases. Relation to forward reaction: as the concentration of the reactant decreases, forward rate will decrease: reverse reaction: Change in concentration: as product increases, reverse rate will increase. Equilibrium: definition: there is no observable change over time, chemical equilibrium: The forward and reverse reactions are equal. The reactant and product concentrations are constant.
