Choose the correct Kc expression when the equation for the Kc expression shown below is halved and reversed. ? A. 1/2 Kc B. 1/ (Kc)1/2 C. Kc 2 D. Kc * 2 E. 1/ Kc 2
1 Answer
Mar 19, 2018
Well, I got
Well, there is no reaction shown... but it does not matter. Suppose
A + B -> C + D
has
K_c = ([C][D])/([A][B]) .
If we then rewrite it as
1/2C + 1/2 D -> 1/2 A + 1/2 B ,
then
color(blue)(K_c') = ([A]^(1//2)[B]^(1//2))/([C]^(1//2)[D]^(1//2))
= 1/(([C]^(1//2)[D]^(1//2))/([A]^(1//2)[B]^(1//2)))
= 1/(([C][D])/([A][B]))^(1//2)
= color(blue)(1/(K_c^(1//2)))
