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Thermodynamics

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Total cards: 8•Content version: v3•Public deck•Updated: 8/1/2026

Card preview (8)

#1
Front (Question)

Define standard enthalpy of atomisation

Back (Answer)

The enthalpy change when mole of gaseous atoms is formed from the element in its standard state under standard conditions

#2
Front (Question)

Define first electron affinity

Back (Answer)

The standard enthalpy change when one mole of gaseous atoms is converted into one mole of gaseous ions, each with a single negative charge

#3
Front (Question)

Define second electron affinity

Back (Answer)

The enthalpy change when mole of electrons is added to one mole of gaseous ions, each with a single negative charge to form one mole of gaseous ions each with 2 negative charges

#4
Front (Question)

Define first ionisation energy

Back (Answer)

The standard enthalpy change when one mole of gaseous atoms is converted into one mole of gaseous ions each carrying a single positive charge

#5
Front (Question)

Is first ionisation energy an endo- or exothermic reaction?

Back (Answer)

Endothermic

#6
Front (Question)

Is first electron affinity an endo- or exothermic reaction?

Back (Answer)

Exothermic

#7
Front (Question)

Is second electron affinity an endo- or exothermic reaction?

Back (Answer)

Endothermic

#8
Front (Question)

Why is second electron affinity endothermic?

Back (Answer)

Involves bringing together 2 negative charges - naturally these want to repel