Why does titration of H2O2 with 0.02M KMnO4 not work at high conc,ie.1.0 M?

Subject: Why does titration of H2O2 with 0.02M KMnO4 not work at high conc,ie.1.0 M?

Date: Mon Feb 14 13:17:46 2000
Posted by Sharon Chan
Grade level: 10-12 School: Headington School Oxford
City: Oxford State/Province: N/A Country: United Kingdom
Area of science: Chemistry
ID: 950555866.Ch

Message:


The faint permanent pink colour occurs after several drops of KMnO4 has 
been added. I have repeated the experiment several times, therefore it is 
not operational errors! The titration only works when a concentration of 
0.05 M of H2O2 is used.

Re: Why does titration of H2O2 with 0.02M KMnO4 not work at high conc,ie.1.0 M?

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