# Environmental Chemistry Assignment | Professional Essay Writers

1. What do Q and K have in common? What is the difference between and K?

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2. Consider the reaction: N,(g) + 3H2(g) + 2NH,(g)

a. Write the equilibrium constant expression (in terms of concentrations) for this reaction: If some hydrogen is added, before the reaction shifts,

b. How will the numerator and denominator of the expression compare to the value at equilibrium?

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c. Will be larger than K? Why?

d. Will the reaction have to shift forward or backward to retain equilibrium? Explain your reasoning, e. Are your answers for b-d consistent with LeChatelier’s principle? Explain.

3. Consider the reaction: H2(g) + 12(g) + 2HI(g)

A reaction mixture at equilibrium at 175 K contains P=0.958 atm, P=0.877 atm, and P+0.020 atm. A second reaction mixture, also at 175 K, contains P = 0.621 atm, Pa=0.621 atm, and P=0.101 atm. is the second reaction mixture at equilibrium? If not, what will the partial pressure of Hibe when the reaction reaches equilibrium at 175 K? (Hint: check your math carefully. You do not need either “x is small or the quadratic formula for this problem, but you DO want to use an ICE table!)

4. Consider the reaction: aAg) bB(9)

Each of the entries in the table represents equilibrium partial pressures of A and B under different initial conditions (same temperature). What are the values of the stoichiometric coefficients a and b in the reaction?

PA(atm)     Po(atm)

4.0               2.0.

2.0               1.4.

1.0                1.0.

0.50               0.71.

0.25              0.50. Get Chemistry help Today

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