My Chem book isn't helping at all...please help!?

Question

Determine the Equilibrium constant K(p) at 25(degrees C) for the reaction N2(g) + 3H2(g) <--> 2NH3(g)

Delta G for 2NH3(g) = -16.6

Answer 1

Get another textbook. I don't know if a soft cover book by Sackheim still exists, but it helped me ace chemistry when I was lost.

Answer 2

If you have an equation like this:
aA+bB <-->cC+dD

then your Kp=[(PC)^c (PD)^d] / [(PA)^a (PB)^b]

where the exponents are related to stoichiometry of the equilibrium reaction and the pressures are at equilibrium. Remember that pure solids and pure liquids are not included in this statement.

So for your reaction:
Kp = [(P NH3)^2] / [(P N2) * (P H2)^3]

(you take the pressure of the products, raise it to the exponent of the coefficient and divide it by the pressures of the reactants raised to the coefficients)

I don't know what the Delta G stands for, I am unfamiliar with that term. Are you sure it says delta G in your text book?