chapter 16 section 2 Flashcards
what two factors allow chemists to predict whether a reaction will occur spontaneously
the change in energy of a reaction system
the randomness of the particles in a system
the great majority of chemical reaction in nature are ____
exothermic
what letter represents entropy
S
formula for ammonium nitrate
2NH4NO3
the melting of ice is a naturally occurring
endothermic process
ice has ____ entropy than liquid water
less
define free energy
relates the enthalpy and entropy factors at a given temperature and constant pressure
what letter represents free energy
G
which sign represents a spontaneous reaction
negative
how does an increase in temperature affect the entropy of a system
the entropy of the system goes up as the temperature increases
the SI unit of heat energy
Joule
the heat released by the complete combustion of one mole of a substance
heat of combustion
label specific heat
J/g^C
amount of heat is measured in
joules
free energy formula must be in
kilojoules
