A 1.00-liter vessel contains the following equilibrium concentrations at 400°C: N2, 1.00 M; H2, 0.50 M; and NH3, 0.50 M. How many moles of hydrogen must be removed from the vessel in order to increase the concentration of nitrogen to 1.20 M?
N2(g) + 3H2(g) 2NH3(g)
a. 0.94 mol
b. 1.5 mol
c. 0.33 mol
d. 0.76 mol
e. 1.1 mol
Answer: a. 0.94 mol