Starting with enthalpy changes of reactions OH
Enthalpy DH tells about the transfer of heat occurring at
constant pressure
negative DH heat is evolved a.k.a exothermic reaction
heat is lost to surroundings
knowing enthalpy changes allow the of
effect on temper tureprediction
equilibrium constant
Prediction of possible safety issues Beirut 2020
Explosive decomposition of ammonium nitrate after initial
heating from fire
NHyNO Not 2h20
Hess's law
If a chemical reaction can be written as a sum of two
other reactions its enthalpy change can be calculated from
those two separate reactions
The total change in enthalpy depends on where we start
and where we end at
Enthalpy change is state function or function of state
meaning the change is independent from the followed
pathway
Enthalpy DH tells about the transfer of heat occurring at
constant pressure
negative DH heat is evolved a.k.a exothermic reaction
heat is lost to surroundings
knowing enthalpy changes allow the of
effect on temper tureprediction
equilibrium constant
Prediction of possible safety issues Beirut 2020
Explosive decomposition of ammonium nitrate after initial
heating from fire
NHyNO Not 2h20
Hess's law
If a chemical reaction can be written as a sum of two
other reactions its enthalpy change can be calculated from
those two separate reactions
The total change in enthalpy depends on where we start
and where we end at
Enthalpy change is state function or function of state
meaning the change is independent from the followed
pathway
