Podcast Beta
Questions and Answers
The enthalpy of formation for fumaric acid is ______ kJ mol−1.
−807.6
The enthalpy of formation for maleic acid is ______ kJ mol−1.
−784.4
The reaction of maleic acid to fumaric acid has a ΔHrxn value of ______ kJ mol−1.
−23.3
Glucose (C6H12O6) is metabolised in the presence of ______ to give carbon dioxide and water.
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The balanced equation for glucose and oxygen to produce carbon dioxide and water is ______.
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The standard enthalpy of formation for water (H2O) is ______ kJ mol−1.
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The standard enthalpy of formation for carbon dioxide (CO2) is ______ kJ mol−1.
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The enthalpy of formation for oxygen (O2) is ______ kJ mol−1.
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Study Notes
Enthalpy of Reaction
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Maleic Acid to Fumaric Acid
- The enthalpy of formation (at 298K) for maleic acid is -784.4 kJ mol-1
- The enthalpy of formation (at 298K) for fumaric acid is -807.6 kJ mol-1
- The enthalpy change for the reaction (ΔHrxn) of maleic acid to fumaric acid is -23.3 kJ mol-1.
Combustion of Glucose
- Glucose (C6H12O6) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O).
- The balanced equation for the reaction is: C6H12O6 + 6O2 → 6CO2 + 6H2O.
- The enthalpy of formation of glucose (C6H12O6) is -1273.0 kJ mol-1.
- The enthalpy of formation of oxygen (O2) is 0 kJ mol-1.
- The enthalpy of formation of water (H2O) is -285.8 kJ mol-1.
- The enthalpy of formation of carbon dioxide (CO2) is -393.5 kJ mol-1.
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Description
This quiz covers the enthalpy changes for two significant chemical reactions: the conversion of maleic acid to fumaric acid and the combustion of glucose. It includes calculations of enthalpy of formation and reaction enthalpy. Test your understanding of thermodynamic principles in these reactions.
