Chemical Equilibrium: Calculating Equilibrium Concentration of Hydrogen Gas

What is the equilibrium concentration of hydrogen gas when the initial concentrations of hydrogen gas and iodine vapor are both 0.041 mol/L, and the concentration of hydrogen iodine is 0.115 mol/L?

A. 0.0222 M

B. 0.0188 M

C. 0.0816 M

Answer:

The equilibrium concentration of hydrogen gas is 0.0222 M

Chemical equilibrium is a fascinating concept in chemistry where the rates of forward and reverse reactions become equal, resulting in no net change in the concentrations of reactants and products. In this specific scenario involving the reaction of hydrogen gas, iodine vapor, and hydrogen iodine, we can determine the equilibrium concentration of hydrogen gas using the provided data and the equilibrium constant.

Given the equilibrium constant (Kc) of 47 at 617°C and the initial concentrations of hydrogen gas, iodine vapor, and hydrogen iodine, we can set up an expression for the equilibrium constant and solve for the equilibrium concentration of hydrogen gas.

After performing the necessary calculations, we find that the equilibrium concentration of hydrogen gas is indeed 0.0222 M. This value signifies the stable concentration of hydrogen gas reached at equilibrium, showcasing the dynamic nature of chemical reactions.

Understanding the equilibrium concentrations of reactants and products in a chemical reaction provides valuable insights into the reaction kinetics and the establishment of a balanced state. By applying the principles of equilibrium constant and reaction stoichiometry, we can accurately predict and calculate the concentrations of substances in a system at equilibrium.