The experimental enthalpy of decomposition of H2O2 was determined using another coffee-cup calorimetry. A sample of H2O2 solution was placed in the calorimeter and the initial temperature of H2O2 solution and the calorimeter was measured. Then, KI solution was added to the solution to catalyze the decomposition of H2O2 to H2O. This resulted to an increase of 16.9ºC in the temperature. Determine the experimental enthalpy of decomposition per mole of H2O2
The experimental enthalpy of decomposition of H2O2 was determined using another coffee-cup calorimetry. A sample of H2O2 solution was placed in the calorimeter and the initial temperature of H2O2 solution and the calorimeter was measured. Then, KI solution was added to the solution to catalyze the decomposition of H2O2 to H2O. This resulted to an increase of 16.9ºC in the temperature. Determine the experimental enthalpy of decomposition per mole of H2O2
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
Problem 9.83PAE: 9.83 A student performing a calorimetry experiment combined 100.0 mL of 0.50 M HCl and 100.0 mL of...
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The experimental enthalpy of decomposition of H2O2 was determined using another coffee-cup calorimetry. A sample of H2O2 solution was placed in the calorimeter and the initial temperature of H2O2 solution and the calorimeter was measured. Then, KI solution was added to the solution to catalyze the decomposition of H2O2 to H2O. This resulted to an increase of 16.9ºC in the temperature. Determine the experimental enthalpy of decomposition per mole of H2O2 given the following additional information. Express your answer in kJ/mol and in 2 decimal places.
moles H2O2: 0.018 mol
Ccal: 55.48 J/oC
mass of the solution (mainly water): 33.5 g
Cp of water: 4.184 J/goC
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