A volume of 80.0ml. of aqueous potassium hydroxide (KOH) was titrated against a

Question

A volume of 80.0ml. of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2S04). What was the molarity of the KOH solution if 18.7ml. of 1.50 M H3S04 was needed? The equation is Express your answer with the appropriate units. Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide, H2Oj, can be titrated against a solution of potassium permanganate. KMn04. The following equation represents the reaction: A certain amount of hydrogen peroxide was dissolved in 100. mL of water and then titrated with 1.68 M KMn04. What mass of H2O2 was dissolved if the titration required 21.3ml. of the KMn04 solution? Express your answer with the appropriate units.

Explanation / Answer

m1v1=m2v2

80*m1=18.7*1.5

m1=0.350625

B)

100*1.68=m2*21.3

m2=7.887323943661972

mass = 7.88*34

=268.169014084507

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