3. Classify each species as either a Lewis acid or a Lewis base. a. Fe+ C. BH3 b. NH3 d. F 4. Based on their molecular structure, pick the stronger acid from each pair of binary acids. Explain your...

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Extracted text: 3. Classify each species as either a Lewis acid or a Lewis base. a. Fe+ C. BH3 b. NH3 d. F 4. Based on their molecular structure, pick the stronger acid from each pair of binary acids. Explain your choice. a. HF and HCI b. H20 and HF С. H2Se and H2S 5. The binding of oxygen by hemoglobin in the blood involves the equilibrium reaction: HbH*(aq) + 02 (aq) HbO2 (aq) + H* (aq) In this equation, Hb is hemoglobin. The pH of normal human blood is highly controlled within a range of 7.35 5. Given the above equilibrium, why is this important? What would happen to the oxygen-carrying capacity of noglobin I blood became too acidic (a dangerous condition known as acidosis)?