Thermochemistry Reference Sheet
Name Symbol Units Uses Sign Equation?
Specific
heat
capacity C J/g°C
or
cal/ g°C
temperature
change always
+ q=mC∆T
heat of
formation ∆H°f kJ/mol finding ∆H° + or - ∆H°rxn = ∆H°f products - ∆H°f reactants
liquid → gas +
heat of
vaporization ∆Hvap kJ/mol gas → liquid - none – use factor labeling
solid → liquid +
heat
of
fusion ∆Hfus kJ/mol liquid → solid - none – use factor labeling
heat of
combustion ∆Hcombustion kJ/mol burning always - none – use factor labeling
heat of
reaction ∆H° kJ + or - use factor labeling
or
∆H°rxn = ∆H°f products - ∆H°f reactants
Thermochemistry Reference Sheet
Name Symbol Units Uses Sign Equation?
Specific
heat
capacity C J/g°C
or
cal/ g°C
temperature
change always
+ q=mC∆T
heat of
formation ∆H°f kJ/mol finding ∆H° + or - ∆H°rxn = ∆H°f products - ∆H°f reactants
liquid → gas +
heat of
vaporization ∆Hvap kJ/mol gas → liquid - none – use factor labeling
solid → liquid +
heat
of
fusion ∆Hfus kJ/mol liquid → solid - none – use factor labeling
heat of
combustion ∆Hcombustion kJ/mol burning always - none – use factor labeling
heat of
reaction ∆H° kJ + or - use factor labeling
or
∆H°rxn = ∆H°f products - ∆H°f reactants
