Question

The expression for Kc for this reaction is:

[1] Kc= [H2][Br2] / [HBr]2

[2] Kc= [H2][Br2] / [HBr]

[3] Kc= [HBr]2 / [H2][Br2]

[4] Kc= 2[HBr] / [H2][Br2]

[5] Kc= [HBr] / [H2][Br2]

Answer 1

$K_c = \cfrac {[HBr]^2}{[H_2][Br_2]}$

Answer: [3]