Chemistry(Please help, thank you!)
posted by Hannah .
A study of the system, H2(g) + I2(g) == 2 HI(g), was carried
out. Kc = 54.9 at 699.0 K (Kelvin) for this reaction. A system was charged with 2.50 moles of HI in a 5.00 liter vessel as the only component initially. The system was brought up to 699.0 K and allowed to reach equilibrium. How many moles of H2 should there be in the container at that time?
I was going to set it up as
2.5HI (1/5.00) (1/127.91HI) but I am not sure if this is correct!