Preparation of Molybdenum Pentachloride and Tungsten Hexachloride

Preparation of Molybdenum Pentachloride and Tungsten Hexachloride. Perform the experiment in a fume cupboardX) Assemble an apparatus as shown in Fig. 131. Pour a little concentrated sulphuric acid into wash bottles 1, 2, and 3. Put a layer of glass wool 

Fill the apparatus with chlorine and perform chlorination of the molybdenum, heating the place of the tube where the metal is with the flame of a burner to 200-300 °C. What colour do molybdenum pentachloride and tungsten hexachloride have If oxychlorides are produced together with the molybdenum(V) or tungsten(VI) chlorides, distil them off in a chlorine stream. Transfer the product into a weighed test tube with a stopper, weigh it, and hand it in to your instructor. Calculate the yield in per cent. 

Test the reaction of molybdenum pentachloride (tungsten hexachloride) with water. What is observed What class of chemical compounds should the molybdenum and tungsten chlorides be related to  

Fill the apparatus with carbon dioxide dried by passing it consecutively through two wash bottles with sulphuric acid and a column with phosphorus(V) oxide. Raise 

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