Chapter 8, Problem 75E

One source of the pure tungsten $\left(\text{Z}=74\right)$ filament used in conventional light bulbs is $\text{tungsten}\left(\text{VI}\right)\text{oxide}$. It is heated with hydrogen at high temperatures. The hydrogen reacts with the oxygen in the oxide, forming steam. Write the equation for the reaction, and classify it as one of the reaction types discussed in this chapter.