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# Equilibrium Concentrations

APCHEM-LN8GQK

Consider the gaseous reaction:

$$H_2+ I_2⇄ 2HI \ \ \ K_c = 100.0$$

Which of the following are the equilibrium concentrations of all reactants and products present at equilibrium if the initial concentration of all substances is 1.00 M?

A

$[H_2] = [I_2] = 0.25 \ \text{M}$

$[HI] = 2.50 \ \text{M}$

B

$[H_2] = [I_2] = 0.75 \ \text{M}$

$[HI] = 1.50 \ \text{M}$

C

$[H_2] = [I_2] = 0.00 \ \text{M}$

$[HI] = 2.50 \ \text{M}$

D

$[H_2] = [I_2] = 1.75 \ \text{M}$

$[HI] = 0.50 \ \text{M}$