Energy Profiles (HSC SSCE Chemistry): Flashcards
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Energy profile definition
Energy profile definition
Graph showing energy changes from reactants to products
Exothermic: products energy level vs reactants
Exothermic: products energy level vs reactants
Lower than reactants
Endothermic: products energy level vs reactants
Endothermic: products energy level vs reactants
Higher than reactants
Activation energy (): measured from ___ to ___
Activation energy (): measured from ___ to ___
Reactants to peak
Enthalpy change (): measured from ___ to ___
Enthalpy change (): measured from ___ to ___
Reactants to products
Sign of for exothermic reactions
Sign of for exothermic reactions
Negative
Sign of for endothermic reactions
Sign of for endothermic reactions
Positive
Effect of catalyst on activation energy ()
Effect of catalyst on activation energy ()
Lowers it
Effect of catalyst on enthalpy change ()
Effect of catalyst on enthalpy change ()
No effect
Activation energy () is always ___
Activation energy () is always ___
Positive