All GRE Subject Test: Chemistry Resources
Example Question #1 : Physical Chemistry
Which law of thermodynamics states that a crystal's entropy at a temperature of absolute zero is equal to 0?
There are four laws of thermodynamics:
Zeroth law of thermodynamics: If two independent systems are each in thermodynamic equilibrium with a thrid independent system, then the first two systems must be in thermodyanmic equilibrium with each other.
First law of thermodynamics: Energy is neither created nor destroyed.
Second law of thermodynamics: The entropy of the universe increases following every reaction.
Third law of termodynamics: At a temperature of 0 Kelvin (absolute zero), the entropy of the crystal is 0.