Given the Following $\Delta$ H ^$\circ$ Values, H₂(g) + (1/2)O₂(g) $\rarr$ H₂O(l) $\Delta$

question 4

Multiple Choice

Given the following $\Delta$ H ^$\circ$ values, H₂(g) + (1/2) O₂(g) $\rarr$ H₂O(l) $\Delta$ H ^$\circ$ _f = -285.8 kJ/mol
H₂O₂(l) $\rarr$ H₂(g) + O₂(g) $\Delta$ H ^$\circ$ _rxn = 187.6 kJ/mol
Calculate $\Delta$ H ^$\circ$ _rxn for the reaction H₂O₂(l) $\rarr$ H₂O(l) + (1/2) O₂(g) .

• A) -98.2 kJ/mol
• B) -88.2 kJ/mol
• C) -78.2 kJ/mol
• D) -68.2 kJ/mol
• E) None of the above

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