6. Consider the following reaction: Fill in the table below showing which direct

Question

6. Consider the following reaction: Fill in the table below showing which direction (left, right, equilibrium to re-establish equilibrium and the effect (increase, decrease, no effect) on value for each stress. (10 points) no effect) each stress would shift the the Ke Stress Direction to shift to re- establish the equilibrium Effect on the value of Kc The temperature is decreased CCL(L) is added to the equilibrium mixture without any change in volume or temperature An inert gas is added to the system at constant pressure and constant temperature An inert gas is added to the system at constant volume and constant temperature Cle(g) is removed from the equilibrium mixture without any change of volume or temperature.

Explanation / Answer

1. The temperature is decreased ==> since it is an exothermic reaction (heat is released) the equilibrium shifts to

right, coming to Kc. Kc depends only on temperature hence temperature is decresed equilibrium shits to right it

results in increase of products which in turn increases Kc value.

2.If CCl4 is added to the equilibrium mixture then it increases products so the equilibrium shifts to left. Kc depends

only on temperature hence no effect on the equilibrium.

3.If an inert gas is added to the system at constant pressure and constant temperature, at constant temperature no

effect but at constant pressure the volume will increase which in turn decreases the pressure hence the equilibrium

shifts in direction of more number of moles but here equal nuuber of moles so there is no effect on the

equilibrium.Kc depends only on temperature hence no effect on the equilibrium.

4.If an inert gas is added to the system at constant volume and constant temperature, at constant temperature

    no effect and at constant volume partial pressures of reactants and products are unchanged so no effect on the

   equilibrium. Kc depends only on temperature hence no effect on the equilibrium

5.cl2 is removed from eqilibrium mixture which reduuces reactants hence the equilibrium shifts to left.Kc depends

only on temperature hence no effect on the equilibrium

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