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TASChemistryQuick questions
Unit 3: Equilibrium, Acids and Redox
Quick questions on Hess's law and bond energies - TCE Chemistry (Tasmania)
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is using enthalpies of formation?Show answer
The standard enthalpy of formation is the enthalpy change when one mole of a compound forms from its elements in their standard states. Elements in their standard state have . For any reaction:
What are using bond enthalpies?Show answer
A reaction breaks bonds in the reactants (requiring energy in) and makes bonds in the products (releasing energy). The estimated enthalpy change is:
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