Enthalpy

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Last updated 11:47 PM on 9/19/26
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6 Terms

1
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Enthalpy

  • measurement of energy in a thermodynamic system

  • measure heat absorbed/released during chemical reaction at constant pressure

  • ΔrH


2
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Molar Enthalpy

  • amount of heat energy absorbed/released for every mole

  • ΔrHm


3
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The Law of Conservation of Energy

  • Energy not created nor destroyed in physical or chemical change

  • chemical system gains energy, surroundings lose energy

  • chemical system loses energy, surroundings gain energy


4
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enthalpy equation

  • ΔrH = nΔrHm

  • ΔrH = mΔrHm / M


5
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exothermic

  • reactants - high potential energy, low kinetic energy

  • products - low potential energy, high kinetic energy


6
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endothermic

  • reactants - low potential energy, high kinetic energy

  • products - high potential energy, low kinetic energy