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One student conducts an acid-base reaction where she finds the following results. What is the enthalpy...

One student conducts an acid-base reaction where she finds the following results. What is the enthalpy of the reaction (in KJ/mol)?

Heat gained by solution 2856 J

Heat gained by calorimeter 156 J

Moles of product formed 0.113 mol

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Answer #1

Heat gained by solution = 2856 J

Heat gained by calorimeter = 156 J

Heat change for solution = (Heat gained by solution) + (Heat gained by calorimeter)

Heat change for solution = (2856 J) + (156 J)

Heat change for solution = 3012 J

Heat change for reaction = -(Heat change for solution)

Heat change for reaction = -(3012 J)

Heat change for reaction = -3012 J

enthalpy of reaction = (Heat change for reaction) / (moles of product formed)

enthalpy of reaction = (-3012 J) / (0.113 mol)

enthalpy of reaction = -26654.87 J/mol

enthalpy of reaction = -26.65 kJ/mol

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