An equilibrium mixture of the following reaction was found to have [I2]= 0.0325M at 1200 ∘C.

What is the concentration of I ?
I2(g)⇌2I(g)
Keq= 1.5×10−2 at 1200 ∘C

Someone please help set this up?

1 answer

Keq = (I)^2/(I2) = 0.015
You know I2 at equilibrium and you know keq, solve for I.