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A Level Chemistry > Thermodynamics Definitions > Flashcards

Thermodynamics Definitions Flashcards

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1
Q

Enthalpy of formation

A

Enthalpy change when 1 mole of a compound is formed from its elements in standard states under standard conditions

Exothermic

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2
Q

Enthalpy of atomisation

A

Enthalpy change when 1 mole of gaseous atoms are formed from an element in its standard state

Endothermic

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3
Q

Enthalpy of 1st ionisation

A

Enthalpy change when 1 mole of gaseous ions is formed from 1 mole of gaseous atoms

Endothermic

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4
Q

Enthalpy of 2nd ionisation

A

Enthalpy change when 1 mole of gaseous 2+ ions is formed from 1 mole of gaseous 1+ ions

Endothermic

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5
Q

1st electron affinity

A

Enthalpy change when 1 mole of gaseous 1- ions are made from 1 mole of gaseous atoms

Exothermic

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6
Q

2nd electron affinity

A

Enthalpy change when 1 mole of gaseous 2- ions are made from 1 mole of gaseous 1- ions

Endothermic

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7
Q

Enthalpy of lattice formation

A

Enthalpy change when 1 mole of solid ionic compound is formed from its gaseous ions

Exothermic

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8
Q

Enthalpy of hydration

A

Enthalpy change when one mole of aqueous ions is formed from 1 mole of gaseous ions

Exothermic

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9
Q

Enthalpy of solution

A

Enthalpy change when 1 mole of solute is dissolved in enough solvent so that no further enthalpy change occurs on further dilution

Ex En

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10
Q

Enthalpy of lattice dissociation

A

Enthalpy change when 1 mole of ionic compound separates into its gaseous ions

Endothermic

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A Level Chemistry (4 decks)

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