The reaction of Br2(g) with Cl2(g) to form BrCl(g) has an equilibrium constant of 15.0 at a certain temperature. If 10.0 grams of BrCl is initially present in a 15.0-liter reaction vessel, what will the concentration of BrCl be at equilibrium?
(A)3.8 × 10^-3 mol/L (B)5.77 × 10^-3 mol/L (C)1.97 × 10^-3 M (D)9.9 × 10^-4 M
A