Calculate G_r for the Decomposition of Mercury(II)oxide at 298

question 91

Multiple Choice

Calculate G_r for the decomposition of mercury(II) oxide at 298 K. 2HgO(s) 
2Hg(l) +
O₂(g)
------------
H_f,kJmol^1
-90.83
S_m,JK^1mol^1
70.29
76.02
205.14

• A)-117.1 kJ  mol ^{ 1}
• B)+246.2 kJ  mol ^{ 1}
• C)-64.5 kJ  mol ^{ 1}
• D)+117.1 kJ  mol ^{ 1}
• E)-246.2 kJ  mol ^{ 1}

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