# Science- Chemistry Ap

posted by Jake

2SO3(g) -> 2SO2(g) + O2(g) Delta H = 197kj

For this reaction shown above, describe the changes that will occur to the number of moles of SO3 under the following conditions:

(b) The pressure in the reaction vessel is decreased by increasing its volume.
(c) The pressure is increased by the addition of helium gas.
(d)The temperature is increased.
(e) Oxygen gas is removed.

1. DrBob222

What do you not understand about Le Chatlier's principle?
a)Additional oxygen makes the reaction shift so as to remove oxygen. That means the reactions shifts to the left and SO3 will increase.

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