HEAT UNIT

HEAT UNITHeat StoichiometryThings you should know so farEnergy transfer endothermic vs. exothermicEnergy diagrams Internal energy (including work)

Heat equationCalorimetry and conservation of energyMolar enthalpy

The next big step!Once you determine the molar enthalpy of reaction (or you are given it, you can put it on the correct side of the equation.

And once youve done that, you can treat the heat as a part of the mole ratio and do STOICH!!Performing Heat Stoichiometry ProblemsThe overall reaction in commercial heat packs can be represented as:4 Fe(s) + 3O2(g) 2Fe2O3(s) H = -1652 kJ

a) How much heat is released when 4.00 mol of iron is reacted with excess oxygen?

b) How many moles of iron are reacted in excess oxygen to produce 533 kilojoules of energy?

Finishing up the same problemc) How much heat is released when 1.00 g iron is reacted with excess oxygen?

d) How much heat is released when 10.0 g of iron reacts with 2.00 g of oxygen?

Can go a lot of different directions now!!!!!