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Which way will the equilibrium shift, for the exothermic reaction below, if additional NH3(l) is added (and everything else is held constant)?N2(g) + 3H2(g)  2NH3(l)Group of answer choicesTo the left (more reactants)To the right (more products)It will not shift

Question

Which way will the equilibrium shift, for the exothermic reaction below, if additional NH3(l) is added (and everything else is held constant)?N2(g) + 3H2(g)  2NH3(l)Group of answer choicesTo the left (more reactants)To the right (more products)It will not shift

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Solution

The equilibrium of a reaction can be shifted by changing the conditions that the reaction is under. This is described by Le Chatelier's Principle, which states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract the change.

In the given reaction, N2(g) + 3H2(g) ⇌ 2NH3(l), the production of NH3 is exothermic. This means that heat is a product of the reaction.

If additional NH3 is added to the system, the system will try to counteract this change in order to reach equilibrium again. According to Le Chatelier's Principle, the system will shift in the direction that consumes the added product.

Therefore, the equilibrium will shift to the left, towards the reactants, in order to consume the added NH3. This will result in the production of more N2 and H2.

So, the answer is "To the left (more reactants)".

This problem has been solved

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