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16 Cards in this Set

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what is the first law of thermodynamics:
energy can neither be created or destroyed
an endergonic reaction ...
nonspontaneous reaction and absorbs energy from bonds, do not occur spontaneously
enthalpy
the internal energy or chemical bond energy in the form of heat
ΔH ~ ΔE
what is the second law of thermodynamics:
all systems tend toward equilibrium - the lowest energy
the greater the disorder or randomness in a system, the larger the ...
entropy
the third law of thermodynamics states that:
the entropy content of a system can only be zero at 0 degrees Kelvin
in this equation below:

ΔH - TΔS = 0

the 0 represents what?
free energy
ΔH represents
change in enthalpy
TΔS represents
change in entropy
at equilibrium what is going on in terms of energy?
there is energy in the system, but none to do work
a spontaneous reaction is said to be ...
exergonic
an enthalpically favored reaction is said to be ...
exothermic
fill in the boxes with either a plus or minus sign:
(see figure)
what does this equation represent:

ΔG˚' = ΔH˚' - TΔS˚'
the standard state
the standard state is defined to be:
1 atm
25˚C
Keq is the equilibrium constant and is defined as:
ratio of [B]/[A] where B is the product and A is the substrate