Question: 5. (4 pts) You're preparing a buffer for an experiment. You've carefully titrated 1 L of 0.4 M H3PO4 with 250 mL of 2 M

5. (4 pts) You're preparing a buffer for an experiment. You've carefully titrated 1 L of 0.4 M H3PO4 with 250 mL of 2 M NaOH. What is the pH of your buffer? a. Find the number of moles of H3PO4 and NaOH. moles H3PO4 = moles NaOH = b. What species are present in your buffer? Circle the relevant species at equilibrium below. H2PO4 H PO, HPO 2 PO, pK,-2.15 pK2-7.2 pK;-12.4 c. How many moles of A are there? How many moles of HA? moles of A-= moles of HA = d. What is the pH? pH =

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