Author Question: A 5.000 mL aqueous sample containing hydrogen peroxide was diluted to 25 mL and analyzed by ... (Read 54 times)

Mimi · **on:** Jul 8, 2021

Question 1

A 5.00 mL sample of a nitric acid solution is titrated with 33.5 mL of 0.201 M NaOH. What is the molarity of the nitric acid solution?
◦ 0.0300 M
◦ 0.149 M
◦ 1.35 M
◦ 6.7 M
◦ 0.522 M

Question 2

A 5.000 mL aqueous sample containing hydrogen peroxide was diluted to 25 mL and analyzed by titration with permanganate:

2 MnO₄^-(aq) + 5 H₂O₂(aq) + 6 H⁺(aq) → 5 O₂(g) + 2 Mn²⁺(aq) + 8 H₂O(l)

The sample required 42.8 mL of 0.0175 M permanganate to reach the end point. What is the concentration of hydrogen peroxide in the original sample?
◦ 0.150 M
◦ 0.0748 M
◦ 0.375 M
◦ 0.0599 M

jxjsniuniu · **Reply #1 on:** Jul 8, 2021

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