Question

A container at equilibrium contains the following concentrations: [Hz] - 0.30 M and [HI]

Answer 1

Answer: The concentration of $I_2$ at equilibrium is 0.45 M

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_c$  

For the given chemical reaction:

$H_2(g)+I_2(g)\rightarrow 2HI(g)$

The expression for $K_c$ is written as:

$K_c=\frac{[HI]^2}{[H_2]^1[I_2]^1}$

$6.0=\frac{(0.90)^2}{(0.30)^1\times (I_2)^1}$

$[I_2]=0.45M$  

Thus concentration of $I_2$ at equilibrium is 0.45 M