Tungsten is found in the form of tungstate , the chief ores being Wolframite (FeWO4 and MnPO4) , schelite( CaWO4) and stolzite ( PbWO4) . The small amounts of MoS2 in the ores are concentrated by the foam floatation process . This is converted to WO3 . It is reduced to metal with hydrogen, reductionContinue reading “In the extraction of tungsten metal, WO3 is reduced with hydrogen gas . Why is it not advisable to use carbon for the reduction?”
Category Archives: nature of oxides
How nature of oxides formed by s and p-block elements vary across a period .
S-block consists of metals ( alkali metals and Alkaline Earth metals ) , the metals form oxides which are basic in enough. This means when the oxides of the metals are made to react with water they form bases. For example Sodium is an s-block , when sodium oxide is made to react with water,Continue reading “How nature of oxides formed by s and p-block elements vary across a period .”
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