[LoveInQuanta]

Howdy, fine Chemistry folks.

I have this two-part question in my homework:

(a) Given the following information at a particular temperature.
S2(g) + C(s)  -> CS2(g)   Kc = 28.5

Calculate Kc for the following reaction at the same temperature.

3CS2(g) ->  3S2 (g) + 3C(s)   Kc =   (Please enter 2 sig figs even if your answer warrants 3.)


(b) Given the following information at a particular temperature.

 H2(g) +  O2(g) -> HO(g)  Kc = 0.58

 H2(g) ->  H(g)  Kc = 1.6 x 10-3

Calculate Kc for the following reaction at the same temperature.

2H(g) + O2(g)  2HO(g)

I thought that since in Part A, all terms are cubed, the cubes could cancel out and Kc would just be 1/28.5 (since the directionality of the reaction is reversed). That is incorrect.

I have no idea how to begin Part B.

Thanks in advance.