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When Heated,mercury(II)oxide Decomposes into Elemental Mercury and Oxygen: 2 HgO(s)→

Question 44

Multiple Choice

When heated,mercury(II) oxide decomposes into elemental mercury and oxygen: 2 HgO(s) → 2 Hg(l) + O2(g) ΔH° = 181.6 kJ ΔS° = 216.4 J/K
Estimate the temperature at which HgO should begin to decompose if the partial pressure of O2(g) is constant at 1.00 atm.


A) -34.8°C
B) 34.8°C
C) 566°C
D) 840°C

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