Answer:
C.) [tex]K = {[CO_{2} ]^{2} [H_2O] }[/tex]
Explanation:
The general equilibrium expression looks like this:
[tex]K = \frac{[B]^b[C]^{c} [D]^{d} }{[A]^{a}} }[/tex]
In this expression,
-----> K = equilibrium constant
-----> uppercase letters = formulas
-----> lowercase letters = balanced equation coefficients
Solids are not included in the expression, so Ca(HCO₃)₂(s) and CaO(s) should be left out. The products should be in the numerator and the reactants are in the denominator. This makes the expression:
[tex]K = \frac{[B]^b[C]^{c} [D]^{d} }{[A]^{a}} }[/tex] <----- Equilibrium expression
[tex]K = {[CO_{2} ]^{c} [H_2O]^{d} }[/tex] <----- Insert gaseous formulas
[tex]K = {[CO_{2} ]^{2} [H_2O] }[/tex] <----- Insert coefficients
