3) A student titrated an unknown weak acid with sodium hydroxide (NaOH) and got the following titration curve. 12 10 8 6

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3 A Student Titrated An Unknown Weak Acid With Sodium Hydroxide Naoh And Got The Following Titration Curve 12 10 8 6 1 (96.37 KiB) Viewed 194 times

3) A student titrated an unknown weak acid with sodium hydroxide (NaOH) and got the following titration curve. 12 10 8 6. 4 2 0 0 2 4 4 09 00 8 10 12 14 16 18 20 22 24 Volume of NaOH, mL a. (4 pts.) Read the pH at the first equivalence point. b. (3 pts.) How many mL of NaOH is needed to reach the first equivalence point? c. (4 pts.) What is the pkai of this acid? d. (4 pts.) Read the pH at the second equivalence point. e. (3 pts.) How many mL of NaOH is needed to reach the second equivalence point? f. (4 pts.) What is the pka2 of this acid? g. (3 pts.) How many moles of H* can 1 mole of this acid donate?