Question

Br2(g) <-> 2Br(g)

KC = 1.1 x 10. -3 at 1280°C
If the intial concentration of Br2 is 0.10
M, what is the equilibrium concentration of Br
[ ] M

Answer 1

The equilibrium concentration of Br is 0.033 M.

Step-by-step explanation:

Given the equilibrium constant (Kc) for the reaction Br2(g) <-> 2Br(g) is 1.1 x 10-3 at 1280°C, and the initial concentration of Br2 is 0.10M, we can use the equilibrium expression to find the equilibrium concentration of Br:

Kc = [Br]2/([Br2])

Plugging in the known values:

1.1 x 10-3 = [Br]2/(0.10)

Simplifying:

[Br] = √(1.1 x 10-3 × 0.10) = 0.033 M

Therefore, the equilibrium concentration of Br is 0.033M.