Calculation of equilibrium constant given the reaction temperature I have only a chemical equation, like:
$$\ce{N2 + 3H2 &lt;=&gt; 2NH3}$$
How can I calculate the value of equilibrium constant from only this equation. Provided temperature is $\pu{298K}$. I can use other standard data. I am really stumped on this question.
By definition, the standard equilibrium constant is:

$K = e^{-\Delta_rG/RT}$

Where $\Delta_rG$ is the difference between the Gibbs Energies of the products and reactants.