previous l 20 of 40 Homework Problem 20 Part A Given the concentrations, calculate the equilibrium constant for this reaction: Learning Goal: To use the equilibrium constant and Le Chateliers At equilibrium, the molar concentrations for reactants and products are found to be principle to determine how a reaction wil respond e 0,20 M lolal 0.25 M and Pols- i 20 M What is the equibrium constant ute) for this reaction? A reaction is at equilibrium when the Express your answer using two significant figures. concentrations of the reactants and products no longer change over time. This does not mean the Hints reaction is over, rather, two competing reactions continue to occur simultaneously at equal rates. The two competing reactions are the forward reaction (reactants products) and the reverse reaction (products reactants) If a reaction at equilibrium is subjected to a stress. the concentrations of reactants and products adjust to reestablish equilibrium. This is called Le Chatelier's principle. A stress might be a change in Submit My Answers Give Up the concentration of reactants or products, a change in the volume of the reaction container, a change in temperature, or the addition of a Part B catalyst. The concentration of PC13(g) is increased to 1.2 M disrupting equilibrium. Calculate the new ratio of products to reactants with this higher concentration of phosphorus trichloride. Assume that the reaction has not yet regained equilibrium. Express your answer using two significant figures. Hints Submit My Answers Give Up