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Introduction to titration

AP.Chem: SPQ‑4 (EU), SPQ‑4.B (LO), SPQ‑4.B.1 (EK)


2MnOX4X(aq)+5HX2OX2(aq)+6HX+(aq)2MnX2+(aq)+5OX2(g)+8HX2O(l)\ce{2MnO4-}(aq) + \ce{5H2O2}(aq) + \ce{6H+}(aq) \rightarrow \ce{2Mn^2+}(aq) + \ce{5O2}(g) + \ce{8H2O}(l)
The reaction between MnOX4X(aq)\ce{MnO4-}(aq) and HX2OX2(aq)\ce{H2O2}(aq) in acidic solution is represented above. In a titration experiment, a 0, point, 020, M solution of KMnOX4(aq)\ce{KMnO4}(aq) is added from a buret to an acidified sample of HX2OX2(aq)\ce{H2O2}(aq) in a flask. The endpoint of the titration is determined by the appearance of a faint pink color in the mixture.
Initial buret reading5, point, 82, space, m, L
Final buret reading35, point, 82, space, m, L
Based on the data in the table above, how many moles of HX2OX2(aq)\ce{H2O2}(aq) were in the sample?
Choose 1 answer: