Enthalpy (HSC SSCE Chemistry): Flashcards

Total energy stored in a substance

$\Delta H$

Positive ($\Delta H > 0$)

Negative ($\Delta H < 0$)

Enthalpy of products - enthalpy of reactants

$q = mc\Delta T$

Heat absorbed when 1 mole dissolves in excess water

(s) solid, (l) liquid, (g) gas, (aq) aqueous

Dissociate into separate ions

$4.18 \times 10^3$