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In the equilibrium reaction NH2COONH4(s) ⇌ 2NH3(g) + CO2(g), which change will cause the partial pressure of NH3 to rise?

1. Adding more solid NH4COONH4 to the system at equilibrium
2. Introducing additional NH3 gas into the system
3. Increasing the concentration of CO2 gas in the system
4. Raising the temperature of the system

Correct answer: Raising the temperature of the system

Solution

Raising the temperature of an equilibrium reaction that is endothermic will cause the reaction to shift towards the products, increasing the partial pressure of NH3.

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