chapter 9 Flashcards
what is delta rh
standard enthalpy change - accompanies a reaction in the molar quantities shown in a chemical equation under standard conditions with products and reactants in standard conditions
what is the activasion energy
minimum amount of energy to start breaking bonds
what are the standard conditions for enthalpy changes
100Kpa
25 degrees c
0.1 mol dm3
physical state of that element at correct pressure and temp
what is delta ch
standard enthalpy change when one mole of substance completely reacts with oxygen with all reactants and products with standard state
what is delta fh
for the formation of one mole of a compound with all reactants and products with standard state
what is delta neut H
when an acid reacts with a base with all reactants and products with standard state
how to calculate energy change
q=mc delta t
what factors xan affect an experimental deltach value
heat loss
incomplet combustion
evaporation of methanol
non standard conditions
