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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