Which equation would describe the following equilibrium constant?
Kc = [Bi3+]2[S2-]3
A. Bi2S3(s) + 6HCl(aq) 2BiCl3(aq) + 3H2S(aq)
B. Bi2S3(s) 3Bi2+(aq) + 2S3-(aq)
C. BiS(s) Bi3+(aq) + S2-(aq)
D. Bi2S3(s) 2Bi3+(aq) + 3S2-(aq)
i hate you dr bob, just answer the question
To determine the equation that describes the given equilibrium constant, let's analyze the formula Kc = [Bi3+]^2[S2-]^3. This equation indicates that the concentration of Bi3+ is squared, while the concentration of S2- is cubed.
Now, let's examine each option:
A. Bi2S3(s) + 6HCl(aq) 2BiCl3(aq) + 3H2S(aq)
In this equation, the concentration of Bi3+ is not squared and the concentration of S2- is not cubed. Thus, option A does not match the equilibrium constant equation.
B. Bi2S3(s) 3Bi2+(aq) + 2S3-(aq)
In this equation, the concentration of Bi3+ is not squared and the concentration of S2- is not cubed. Thus, option B does not match the equilibrium constant equation.
C. BiS(s) Bi3+(aq) + S2-(aq)
In this equation, the concentration of Bi3+ is not squared and the concentration of S2- is not cubed. Thus, option C does not match the equilibrium constant equation.
D. Bi2S3(s) 2Bi3+(aq) + 3S2-(aq)
In this equation, the concentration of Bi3+ is squared and the concentration of S2- is cubed. Therefore, option D matches the given equilibrium constant equation.
Therefore, the equation that describes the equilibrium constant Kc = [Bi3+]^2[S2-]^3 is option D, Bi2S3(s) 2Bi3+(aq) + 3S2-(aq).