Worksheet 18

# Worksheet 18 - Worksheet 18 Equilibrium Balance the...

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18 - Equilibrium Balance the following reaction, and use it to answer the following 8 questions: ___ N 2 (g) + ___ H 2 (g) ' ___ NH 3 (g) 1. Starting with 0.500 M N 2 and 0.800 M H 2 , the reaction is allowed to proceed until it reaches equilibrium. In the absence of products, the value of Q, the reaction quotient, is zero, less than any possible value of K . The [NH 3 ] eq = 0.150 M at 250 o C. Determine K for this reaction at this temperature. a) Start by filling in the ICE table with the Initial concentrations. [ N 2 ] (M) [H 2 ] (M) [NH 3 ] (M) I nitial _____ _____ _____ C hange _____ _____ _____ E quilibrium _____ _____ _____ b) Next, fill in the Changes in the system, in terms of x , which will determined by the stoichiometry . Reactants are used up (-) and products are formed (+). c) Next, write equilibrium expressions, in terms of initial concentrations and the changes that occur (x). d) Solve for x from the information you have. x = ______ e) Write the equation for K , the equilibrium constant, in terms of the concentrations of reactants and products. K

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Worksheet 18 - Worksheet 18 Equilibrium Balance the...

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