The concentration of hydrogen peroxide in a solution is determined by titrating a 10.0- mL sample of the solution with permanganate ion. 2 MnO4 - (aq) + 5 H2O2(aq) + 6 H+ (aq)  2 Mn2+(aq) +5 O2(g) + 8 H2O(l) If it takes 16.8 mL of 0.124 M MnO4 - solution to reach the equivalence point (i.e., where the reactions stops), what is the molarity of the hydrogen peroxide solution?

Chemistry by OpenStax (2015-05-04)
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Chapter4: Stoichiometry Of Chemical Reactions
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6. The concentration of
hydrogen peroxide in a solution
is determined by titrating a 10.0-
mL sample of the solution with
permanganate ion.
2 MnO4
-
(aq) + 5 H2O2(aq) +
6 H+
(aq)  2 Mn2+(aq) +5 O2(g)
+ 8 H2O(l)
If it takes 16.8 mL of 0.124 M
MnO4
- solution to reach the
equivalence point (i.e., where the
reactions stops), what is the
molarity of the hydrogen
peroxide solution?

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