Calculation of enthalpy changes of reaction using bond energies
1 mark · NormalWhich statement is correct about bond energies and enthalpy change in chemical reactions?
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Correct option: Bond making releases energy and is exothermic.
Common mistakes: Confusing energy direction for making and breaking bonds
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Marking points
A1 · 1 mark · Correct option chosen: Bond making releases energy and is exothermic.
Worked solution
Bond making releases energy and is an exothermic process. Therefore, the correct option is: 'Bond making releases energy and is exothermic.'