[공학]황산철의 정량

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황산철의 정량

목차

1. Title
2. Date
3. Principle
4. Apparatus & Reagent
5. Procedure
6. Result
7. Discussion

본문내용

3. Principle
barite
It is a sulfate of barium, BaSO4, found in nature as tabular crystals or in granular or massive form and has a high specific gravity. The mineral is widely distributed throughout the world. It often occurs in veins with lead and zinc minerals. It is insoluble in water, and this property is made use of in testing for the sulfate radical. It is practically insoluble under ordinary conditions in all the usual chemical reagents. Barite is used as a commercial source of barium and many of its compounds. Ground barite is used as a filler in the manufacture of linoleum, oilcloth, paper and textile manufacturing, rubber, and plastics. Finely ground barite is used to make a thixotropic mud for sealing oil wells during drilling.

4. Apparatus & Reagent
1) Apparatus
Beaker 300㎖
Burner
Filter paper
crucible

5. Procedure
① FeSO4 105℃ 1h dry 0.5g + 150㎖ H2O + 12N HCl 2㎖
② 0.04M BaCl2 100㎖ 80~90℃ heat
③ ① 90℃ heat mix ② → 2~3min stir
④ for a moment heating precipitate → 1~2h heating (high temperature)
⑤ filter (wash H2O) (solution must clear)
⑥ crucible 600℃1h heating
⑦ put in ⑤ filter paper → heating (dryH2O)
⑧ burn(still crucible color will red)
⑨ weight

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