1. Complete the following review table N2(g) + 3 H2(g) ⇌ 2 NH3(g) ΔH = –92.4 kJ/mol Stress Le Châtelier Predicts Chemical Kinetics Explains Response Shift Effect Net
1. Complete the following review table
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N2(g) + 3 H2(g) ⇌ 2 NH3(g) ΔH = –92.4 kJ/mol |
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Stress |
Le Châtelier Predicts |
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Response |
Shift |
Effect |
Net Rx |
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Add H2 |
Some of the added H2 removed |
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Add NH3 |
Left |
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Removed N2 |
rf decrease |
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Decrease volume (increase pressure) |
Net forward rx |
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Decrease Temperature |
rr decreases more than rf |
2. Holding the temperature and pressure constant when a reactant or product is added to an equilibrium system is easier said than done. Some SO3 is added to the following system. Its temperature and pressure are not fixed.
2 SO2(g) + O2(g) ⇌ 2 SO3(g) + 198 kJ/mol
2. (a)In which direction will the system shift in response to the added SO3?
2. (b)In which direction will the system shift in response to the small change in pressure resulting from the added SO3?
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