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10 Cards in this Set
- Front
- Back
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Define enthalply |
The heat energy change at a constant pressure |
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What is the symbol for enthalpy |
H |
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What is a reaction pathway |
The route in terms of enthalply from reactants to products |
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Specific hear capacity of water |
4.18 JK-1mol-1 |
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What is Hess' law used for |
Calculate the enthalpy change of chemical reactions |
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Units of bond enthalply |
KJmol -1 |
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Delta H (using bond enthalpies) |
Energy required to break bonds - energy released forming bonds |
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Mean bond enthalply |
Energy required to break one mole of a covalent bond in the gaseous state |
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What is the activation energy |
The energy required to break all bonds in the reactants |
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What is standard pressure |
100 kPa |
