The Keq of a reaction is 4 x 10-7. At equilibrium:
a. the reactants are favored
b. the products are favored
c. neither the reactants nor the products are favored

Hi teatea!
Since the Keq of this reaction is 4x10-7 = 0.0000004, which is less
than 1, then the reactants are favored, so the right answer is 'a'.

"The value for K is large when products dominate the mixture. 
The value for K is small when the reactants dominate the mixture. 
The expression for an equilibrium reaction is determined by the
coefficients in the balanced equation.

"Large K > 1 products are 'favored'
K = 1 neither reactants nor products are favored
Small K < 1 reactants are 'favored' "

Equilibrium equations and equilibrium constants
http://scidiv.bcc.ctc.edu/wv/7/0007-007-Equi_exp_k.html  

You might want to check the above link in order to get a better
understanding of why this is true.


Google search strategy:
equilibrium constant equation favored
://www.google.com/search?sourceid=navclient&ie=UTF-8&oe=UTF-8&q=equilibrium+constant+equation+favored


I hope this helps! If you have any doubt regarding my answer, please
don't hesitate to request a clarification.


Best wishes!
elmarto