Question

When heated, mercury(II) oxide decomposes into elemental mercury and oxygen:
2 HgO(s) -> 2 Hg(l) + O2(g) H = 181.6 kJ S = 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) -34.8C
B) 34.8C
C) 566C
D) 840C

Answer

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