U5|Thermochemistry 27-30

Question 1

if the process is spontaneous, the reverse is

Answer 1

non-spontaneous
- also note that spontaneous does NOT mean fast! it can be fast or slow process (kinetics is speed)
- enthalpy alone is not a criterion for spontaneity

Question 2

what is entropy?

Answer 2

• is a measure of how energy is distributed to, from, or within a system as a function of temperature
• probability is closely related to probability
• the higher the microstates, the greater the tendency to progress to that state
• is a state function
• denoted by the letter S
• is a state function that measures the extent that energy is dispersed, into the number of microstates possible for a system, not the amount of chaos created but the possibilities of chaos