If Not Handled Carefully,ammonium Perchlorate Can Decompose Violently According to the Thermochemical

question 16

Multiple Choice

If not handled carefully,ammonium perchlorate can decompose violently according to the thermochemical equation below.
$2 \mathrm{NH}_{4} \mathrm{ClO}_{4}(s) \rightarrow \mathrm{N}_{2}(g) +\mathrm{Cl}_{2}(g) +2 \mathrm{O}_{2}(g) +4 \mathrm{H}_{2} \mathrm{O}(g) \quad\quad\quad\quad\quad \Delta H=-375.6 \mathrm{~kJ}$
The enthalpy of formation of H₂O(g) is ?241.8 kJ.Calculate the enthalpy of formation of ammonium perchlorate.

• A) ?295.8 kJ
• B) ?156.4 kJ
• C) 66.9 kJ
• D) 133.8 kJ
• E) 561.1 kJ

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