Topic 10 & 11 - Equilibrium Flashcards
(10 cards)
what are standard conditions
100 kPa, 298K (25°C)
meaning enthalpy change
the heat energy change measured at a constant pressure
meaning enthalpy of reaction
enthalpy change when the reactants in the stoichiometric equation react to give the products, under standard conditions
meaning enthalpy of combustion
enthalpy change when 1 mole of substance is burnt in excess oxygen in complete combustion, under standard conditions
meaning enthalpy of formation
enthalpy change when 1 mole of compound is formed from its elements, under standard conditions
meaning enthalpy of neutralisation
enthalpy change when 1 mole of water is formed by reacting and acid with an alkali, under standard conditions
how to calculate energy transfer
energy transferred = mass * specific heat capacity * temperature change
Q = mc△T
what is the units for enthalpy change
KJ mol^1
meaning bond enthalpy
meaning mean bond enthalpy
