The salt ammonium nitrate can follow three modes of decomposition: (a) To HNO 3 (g) and NH

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The salt ammonium nitrate can follow three modes of decomposition:

(a) To HNO3(g) and NH3(g), 

(b) To N2O(g) and H2O(g), and 

(c) To N2(g), O2(g), and H2O(g). 

Calculate ΔG°rxn for each mode of decomposition at 298 K. Explain in light of these results how it is still possible to use ammonium nitrate as a fertilizer and identify the precautions that should be taken when it is used.

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