Author Question: One method of determining the concentration of hydrogen peroxide (H2O2) in a solution is through ... (Read 54 times)

mimie · **on:** Nov 5, 2023

Question 1

Lithium metal dissolves in water to yield hydrogen gas and aqueous lithium hydroxide. What is the final concentration of hydroxide ions when 5.500 g of lithium metal is dropped into 750. mL of water?
◦ 1.06 M
◦ 0.528 M
◦ 2.11 M
◦ 0.792 M
◦ 0.943 M

Question 2

One method of determining the concentration of hydrogen peroxide (H₂O₂) in a solution is through titration with the iodide ion. The net ionic equation for this reaction is
H₂O₂ + 2I^– +2H⁺→ I₂ + 2H₂O
A 50.00 mL sample of a hydrogen peroxide solution is found to react completely with 37.12 mL of a 0.1500 M KI solution. What is the concentration of hydrogen peroxide in the sample?
◦ 5.568 × 10^–2 M
◦ 0.2227 M
◦ 0.1010 M
◦ 0.4041 M
◦ 0.1114 M

H.cope00 · **Reply #1 on:** Nov 5, 2023

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