I need help approaching these types of problems
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With consumed permanganate solution and it's molarity you get the moles of it. The ratio permanganate /iron is 1:5  so the moles of iron are 5 times higher. Calculate the mass by using the molar mass of iron.
The devide through the mass of sample times 100 gives the percentage .

Quote from: Harini on October 09, 2022, 02:08:08 PM
I need help approaching these types of problems
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Molarity and volume of KMnO₄ is given and the balanced equation is also given.
Molarity = moles /volume in L
Use this equation to know the moles of KMnO₄
Follow these steps
Mx V (L) moles KMnO₄   ----> Moles of Fe ²⁺ ------ grams of Fe
% of Fe in 5.00 g sample Hb = grams of Fe/ 5   * 100%