The Preparation and Principal Reactions of Molybdenum Trioxide
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- Category: Molybdenum knowledge
- Published on 27 August 2013
- Written by 陈桂兰
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MoO3 is produced industrially by roasting molybdenum disulfide, the chief ore of molybdenum:
2 MoS2 + 7 O2 → 2 MoO3 + 4 SO2
The laboratory synthesis entails the acidification of aqueous solutions of sodium molybdate with perchloric acid:
Na2MoO4 + H2O + 2 HClO4 → MoO3(H2O)2 + 2 NaClO4
The dihydrate loses water readily to give the monohydrate. Both are bright yellow in color.
Molybdenum trioxide dissolves slightly in water to give "molybdic acid." In base, it dissolves to afford the molybdate anion.
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