Enthalpy Definitions

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Enthalpy change of atomisation
enthalpy change when 1mol of gaseous atoms forms from its elemement under standardstates and conditions
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Enthalpy change of combustion
enthalpy chnage when 1mol of a compound reacts completely in oxygen under standard states and conditions
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Enthalpy change of formation
Enthalpy change when 1mol of a compound is formed from its elements under standard states and conditions
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Enthalpy change of hydration
Enthalpy change when 1mol of isolated gaseous ions are dissolved in water, forming 1mol of aqueous ions under standard conditions
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Enthalpy change of neutralisation
Enthalpy change when an acid(aq) and a base(aq) neutralise each other forming 1mol of water under standard conditions
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Enthalpy change of solution
Enthalpy change when1mol of a compound is completely dissolved in water under standard conditions
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Endothermic
Takes in heat from the surrouindings. (+ve value)
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Exothermic
Releases heat into the surroundings. (-ve value)
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Entropy
the quantative measure of disorder within a system
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Standard entropy change of reaction
Entropy change that accompanies a reaction under standard states and conditions
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Card 2

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Enthalpy change of combustion

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enthalpy chnage when 1mol of a compound reacts completely in oxygen under standard states and conditions

Card 3

Front

Enthalpy change of formation

Back

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Card 4

Front

Enthalpy change of hydration

Back

Preview of the front of card 4

Card 5

Front

Enthalpy change of neutralisation

Back

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