Suppose for a synthesis of hydrogen fluoride from hydrogen and fluorine, 3.000 moles of H2 and 6.000 moles of F2 are mixed in a 3.000-L flask. Assume that the equilibrium constant for the synthesis reaction at this temperature is 1.15x102. H2 (g) + F2 (g) ↔ 2HF (g)                                                                                                         What is the molar concentration of HF at equilibrium?                                                                                                         What is the molar concentration of F2 at equilibrium?                                                                                                         At a Kc of 4.15x103, predict the direction of the reaction if the starting concentrations are [H2]=2.30 M, [F2]= 1.25x10-3 M, and [HF]= 4.37 M a. 1.936 b. 0.968 c. 1.032 d. Reverse e. Forward f. 3.2 x 10-2 g. 2.140 h. The system is at equilibrium

Chemistry & Chemical Reactivity
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Chapter15: Principles Of Chemical Reactivity: Equilibria
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Problem 3PS: Kc = 5.6 1012 at 500 K for the dissociation of iodine molecules to iodine atoms. I2(g) 2 I(g) A...
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Suppose for a synthesis of hydrogen fluoride from hydrogen and fluorine, 3.000 moles of H2 and 6.000 moles of F2 are mixed in a 3.000-L flask. Assume that the equilibrium constant for the synthesis reaction at this temperature is 1.15x102.

H2 (g) + F2 (g) ↔ 2HF (g)

                                                                                                       

What is the molar concentration of HF at equilibrium?

                                                                                                       

What is the molar concentration of F2 at equilibrium?

                                                                                                       

At a Kc of 4.15x103, predict the direction of the reaction if the starting concentrations are [H2]=2.30 M, [F2]= 1.25x10-3 M, and [HF]= 4.37 M

a.

1.936

b.

0.968

c.

1.032

d.

Reverse

e.

Forward

f.

3.2 x 10-2

g.

2.140

h.

The system is at equilibrium

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