Chem 111
posted by Anonymous .
if the equilibrium concentration of nitrogen at 18degrees C is 0.256M and equil. concen. of hydrogen is 0.0184M what is the equil. concen. of ammonia?
N2 + 3 H2 <=> 2 NH3;
so K= [NH3]^2 / [N2][H2]^3
Is this correct?
Then ICE table? Giving me....
K= (2x)^2 / (0.256x)(0.0814 3x)^3
Am I on the right track?

You have substituted 0.256x as the equilibrium concn of N2 but the problem states it is 0.256M. You have substituted 0.01843x as the equil concn of H2 but the problem states it is 0.0184M.

Oh and K=.0244
so is this correct?
.0244 = (2x)^2 / (0.256)(0.0814)^3
x= 9x10^4