Answer to Question #272425 in General Chemistry for jhon

Question

A researcher tries to find out the mass percent composition of an Iron ore sample. The

researcher weighted 1.30 g of Iron ore and dissolved it in HI (aq) solution. Based on the

given redox reaction generated Fe2+ is titrated with 32.5 mL of 0.088 M of potassium

permanganate. Find the mass percent Fe in the ore sample? What if the researcher dilutes

the potassium permanganate solution to half and uses the same volume of solution for

titration, how many grams of iron remains unreacted?

Fe2+ + Mn04 > Fe3+ + Mn2+

Answer 1

Mass percent of Fe=43.2%