Question 264577

Tungsten carbide (WC), used in making tools and jewelry, is produced by the

the reaction of tungsten hexachloride (WCl 6 ), H 2, and CH 4 at 670℃.

WCl 6 + H 2 + CH 4 → WC + 6 HCl

If 23.5 g WCl 6 reacts with excess H 2 and CH 4, and 10.8 g WC is recovered,

what is the percent yield?