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Determination of iron in chalybite.Weigh up 1 gram of the dry powdered ore, and dissolve in 10 c.Of dilute sulphuric acid and an equal volume of water with the aid of heat.Avoid evaporating to dryness.Dilute and titrate.The result will give the percentage of iron existing in the ore in the ferrous state.Some ferric iron may be present.
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