The Thermochemical Equation for the Formation of Ammonia from Elemental $~~~~~~~~$

question 23

Multiple Choice

The thermochemical equation for the formation of ammonia from elemental nitrogen and hydrogen is as follows.
N₂(g) + 3 H₂(g) 2 NH₃(g) $~~~~~~~~$ $~~~~~~~~$ $\Delta$ H = -92.2 kJ
Given a system that is initially at equilibrium,which of the following actions cause the reaction to proceed to the left?

• A) adding N₂(g)
• B) removing NH₃(g)
• C) adding a catalyst
• D) decreasing the temperature
• E) removing H₂(g)

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