14 Hydrogen and iodine can react reversibly to produce hydrogen iodide. The equation is shown.
H₂(g) + 12(g) 2HI(g)
4.00 mol of hydrogen gas and Xmol of iodine vapour are mixed in a sealed container of volume
1.00 dm³ at a temperature of 460 K. The system is allowed to reach equilibrium.
The equilibrium mixture contains 2.00 mol of hydrogen iodide. The equilibrium constant, Kc, for
the reaction at 460 K is 4.0.
What is the value of X?
A 0.50 mol
B 1.17 mol
C 1.33 mol
D 2.50 mol