Part 1) The reaction: 2 IBr(g) I 2 (g) + Br 2 (g) is allowed to come to equilibr

Question

Part 1) The reaction: 2 IBr(g) I2(g) + Br2(g) is allowed to come to equilibrium. State the effect (shift to the right, shift to the left, or no effect) if the following conditions are changed:

a) Br2 is added __________________

b) the temperature is decreased (exothermic reaction)__________________

c) a catalyst is added __________________

d)container volume is increased __________________

Part 2)  When 2.00 moles of ammonia are introduced into a 1.00 liter flask, it reacts as follows:

2NH3(g) = 3H2(g) + N2(g)

At equilibrium 1.25 moles of ammonia remain. Calculate the Kc. (Use an ice box.)

Explanation / Answer

a)towards left

b)towards right

c)towards right

d)no effect

2)

2NH3 ----> 3H2 + N2

2 0 0

1.25 0.75*3/2 0.75/2

1.25 1.125 0.375

SO Kc=[N2][H2]^3/[NH3]^2

=0.375*1.125^3/1.25^2

=0.3417

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