4 Solubility and... 18.3 Gibbs Free E E OKINETICS AND EQUILIBRIUM Calculating equilibrium composition from an equilibrium constant Suppose a 250. mL flask is filled with 1.2 mol of Cl₂ and 0.60 mol of HCI. The following reaction becomes possible: H₂(g) + Cl₂(g) 2HCl (g) The equilibrium constant K for this reaction is 0.409 at the temperature of the flask. Calculate the equilibrium molarity of H₂. Round your answer to two decimal places. M X 5

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