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The Element Oxygen Was Prepared by Joseph Priestley in 1774

Question 93

Multiple Choice

The element oxygen was prepared by Joseph Priestley in 1774 by heating mercury(II) oxide: HgO(s) → Hg(l) + ½O2(g) , ΔH° = 90.84 kJ/mol. Estimate the temperature at which this reaction will become spontaneous under standard state conditions. The element oxygen was prepared by Joseph Priestley in 1774 by heating mercury(II) oxide: HgO(s) → Hg(l) + ½O<sub>2</sub>(g) , ΔH° = 90.84 kJ/mol. Estimate the temperature at which this reaction will become spontaneous under standard state conditions. A) 108 K B) 430. K C) 620. K D) 775 K E) 840. K


A) 108 K
B) 430. K
C) 620. K
D) 775 K
E) 840. K

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