Consider this reaction:
H + A ---> HA
The equilibrium constant of this reaction is:
Keq = [HA]/([H][A])
For example, the acid ionization constant expression of HCl is based on this equation:
HCl ----> H+ + Cl-
Ka = ([H+][Cl-])/[HCl]
Answer:- 3.0 g
Solution:- Cyclohexanol gives cyclohexene on acid catalysis. Water molecule is actually given out in the reaction.

There is 1:1 mole ratio between cyclohexanol and cyclohexene. Let's calculate the theoretical yield of cyclohexene using stoichiometry as:

= 3.0 g Cyclohexene
Therefore, the theoretical yield of cyclohexene is 3.0 g.
.hshhshahahjajsjsjsjsjsjjs