A student titrates permanganate (MnO4-) to acidified iron (Fe2+ (aq)) solution. The conical flask contains dissolved iron (II) to which is added sulphuric acid to make sure the solution is acidic. The burette contains potassium permanganate (KMnO4),a strong oxidizing agent,with a known molarity. As the potassium permanganate is dripped into the flask the purplish colour disappears as permanganate (MnO4–) changes to clear manganese (Mn2+). The end point is reached when the solution turns a faint pinkish purple. The object is to ascertain the moles of iron in the sample | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Chillmaid, Martyn F. |
Taille de l’image : | 3803 px × 5625 px |
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Property Release : | Non requis |
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