The tungsten used in filaments for light bulbs can be prepared from tu – InterviewSolution

1.	The tungsten used in filaments for light bulbs can be prepared from tungsten (VI) oxide by reduction with hydrogen at 1200^@CWO_3(s) + 3H_2(g)W(s) + 3H_2O (g) , Delta H = 114.9 kJDelta H_ffor H_2O(g) = -214.8 kJ "mol"^(-1) . Calculate Delta H_f for WO_3(s).
Answer» SOLUTION :`-840.3kJ`

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