Lecture 14 Flashcards
1
Q
Endothermic definition and units
A
Heat/energy absorbed.
deltaH (rxn) >0
Product-reactant= + number
2
Q
Exothermic definition and units
A
Heat released.
deltaH (rxn) <0
product - reactant=- number
3
Q
Hess’s Law definition and equation
A
DeltaH(rxn) depends on Hf (H formation) of reactants and products and doesn’t depend on Hf of intermediate steps
DeltaH subscript RXN=E (sigma sign)H subscript f (products)- E (sigma)H subscript f (reactants)
4
Q
Stoichiometry of DeltaH subscript rxn formula?
A
G–>Mols–>kJ
5
Q
hf units
A
kJ/Mol
6
Q
G x mols/molar mass x kJ/1 mol og element = ?
A
kJ
7
Q
mols of product x kJ/1mol =
A
Amt of heat released or absorbed
