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Redox Problem Set
©www.coolschool.ca - U05L10
1) A solution of Sn(NO3)2 of unknown concentration can be titrated with a solution of
acidified KMnO4 of known concentration and the concentration of the Sn(NO3)2 can be
calculated. The unbalanced reaction is…
Sn2+ + MnO4- + H+ → Sn4+ + Mn2+ + H2O
purple
colourless
If 42.0 mL of Sn(NO3)2 are titrated by 18.0 mL of 0.15 M KMnO4 then find the
[Sn(NO3)2].
2) A solution of Fe(NO3)2 of unknown concentration can be titrated with a solution of
acidified KMnO4 of known concentration and the concentration of the Fe(NO3)2 can be
calculated. The unbalanced reaction is…
Fe2+ + MnO4- + H+ → Fe3+ + Mn2+ + H2O
purple
colourless
If 18.0 mL of Fe(NO3)2 are titrated by 32.0 mL of 0.250 M KMnO4 then find the
[Fe(NO3)2].
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