Author Question: A solution of hydrochloric acid of unknown concentration was titrated with 0.10 M NaOH. If a 100.-mL ... (Read 21 times)

jenna1 · **on:** Mar 21, 2021

Question 1

A solution contains 25 mmol of H₃PO₄ and 10. mmol of NaH₂PO₄. What volume of 2.0 M NaOH must be added to reach the second equivalence point of the titration of the H₃PO₄ with NaOH?

◦ 5.0 mL
◦ 12 mL
◦ 25 mL
◦ 30. mL
◦ 60. mL

Question 2

A solution of hydrochloric acid of unknown concentration was titrated with 0.10 M NaOH. If a 100.-mL sample of the HCl solution required exactly 10. mL of the NaOH solution to reach the equivalence point, what was the pH of the HCl solution?

◦ 12.0
◦ 2.0
◦ 0.0
◦ 4.0
◦ 8.0

Jbrasil · **Reply #1 on:** Mar 21, 2021

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