PS31.CalculatingKeq

Basic Chemistry (Chapters 1-16)

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CHEMISTRY 2002 NAME PROBLEM SET #31: Calculating K eq DATE PERIOD Read Sections 18.7 – 18.9! 1. What is the algebraic form of the equilibrium constant for each of the following reactions: a. 2 H 2 ( g ) + O 2 ( g ) 2 H 2 O ( g ) K eq = b. Cl 2 ( g ) + F 2 ( g ) 2 ClF ( g ) K eq = c. 2 SO 2 ( g ) + O 2 ( g ) 2 SO 3 ( g ) K eq = 2. Ammonia, a very important industrial chemical, is produced by the direct combination of the following elements under carefully controlled conditions: N 2 ( g ) + 3 H 2 ( g ) 2 NH 3 ( g ) Suppose, in an experiment, that the reaction mixture is analyzed after equilibrium is reached and it is found, at the particular temperature, that [NH 3 ( g )] = 0.34 M, [H 2 ( g )] = 2.1 x 10 -3 M, and [N 2 ( g )] = 4.9 x 10 -4 M. Calculate the value of K eq at this temperature. 3. Suppose the reaction system CH 4 ( g ) + 2 O 2 ( g )
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Unformatted text preview: CO 2 ( g ) + H 2 O ( l ) has already reached equilibrium. Predict the effect of each of the following changes on the position of the equilibrium. Tell whether the equilibrium will shift to the right, will shift to the left, or will not be affected. a. Any liquid water present is removed from the system. b. CO 2 is added to the system by dropping a chunk of dry ice into the reaction vessel. c. The reaction is performed in a metal cylinder fitted with a piston, and the piston is compressed in order to decrease the total volume of the solution. d. Additional O 2 ( g ) is added to the system from a cylinder of pure O 2 ....
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