please solve Nitrogen and oxygen react to form nitrogen monoxide, like this N2 (

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please solve

Nitrogen and oxygen react to form nitrogen monoxide, like this N2 (a) +0,(9)2NO (9) The reaction is endothermic Suppose a mixture of N2.O2 and NO has come to equilibrium in a closed reaction vessel Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left perturbation change in composition shift in equilibrium tothe nant to the left |The pressure of N2 wi ist is added to the reacion vessel The pressure ofNO will 7 none) to the right to the let (none) The pressure at N we 2 The tamperature is lowwered The pressure of NO will Start Over Undo Help Next > I haven't learned this yet

Explanation / Answer

“Le Chatelier's Principle and catalysts

Adding a catalyst makes absolutely no difference to the position of equilibrium, and Le Chatelier's Principle doesn't apply to them. This is because a catalyst speeds up the forward and back reaction to the same extent. Because adding a catalyst doesn't affect the relative rates of the two reactions, it can't affect the position of equilibrium. So why use a catalyst?

For a dynamic equilibrium to be set up, the rates of the forward reaction and the back reaction have to become equal. This doesn't happen instantly. For a very slow reaction, it could take years! A catalyst speeds up the rate at which a reaction reaches dynamic equilibrium.”

So, the answer to the first question is none!

2) The second case is a little bit different. However, the reaction has the same amount of molecules at both sides, so the pressure is the same. In gases, when you increase temperature, the pressure increases too. Same happens when you lower it.

BUT...

In this case, decreasing the pressure has no effect whatsoever on the position of the equilibrium. Because you have the same numbers of molecules on both sides (on the left there are 1 +1 = 2 moles, on the right you have 2 moles), the equilibrium can't move in any way that will increase the pressure again!

So, the answer is none again.

Hope this helps!

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