GChemOChem - Thermodynamics and Heat Capacities

Question 1

Open system exchanges ____ and ____ with its surroundings. I.e me

Answer 1

matter, energy

Question 2

Closed system exchanges ___ but not _____. i.e a pop can

Answer 2

energy (gets colds, matter (pop)

Question 3

an extensive property depends on the amount of ___ present in the system. i.e mass, volume

Answer 3

matter

Question 4

an intensive property does not depend on the amount of _____ present in the system. i.e temperature

Answer 4

Matter

Question 5

Zeroth Law states

Answer 5

ABC will all be the same temo

Question 6

KE = 3/2TR = 1-2mv^2

Question 8

State functions are properties that depend only on final and initial states, and not the ___ taken. (displacement)

Answer 8

path

Question 9

Path states are properties of a system that depend on the way in which it was ______ out. (distance)

Answer 9

carried. The path

Question 10

All state functions have __ letters. All path functions have ____

Answer 10

capital, lowercase

Question 11

what is 0C in K?

Answer 11

273K

Question 12

Electronic energy is the attraction between electrons and their ___

Answer 12

nucleus

Question 13

Translation energy is largely the same as kinetic tem which is therefore ..

Answer 13

temperature

Question 14

w=-P*V units are in

Answer 14

kPa*L=J (ensure it is in Pa)

Question 15

if we want positive work we need a contraction or expansion

Answer 15

contraction (2 negs to cancel) w=-P*V

Question 16

change in E = q + w

Answer 16

heat + work

Question 17

dE= q + w

Question 18

the change in enthalpy (d) equals the heat gained or lost at a constant _____

Answer 18

pressure

Question 19

dH = dE + (dn)RT

Answer 19

change in enthalpy is the change in energy plus the change of moles x RT

Question 20

Hess’s law states that the total enthalpy of the overall rxn is equal to the sum

Question 21

Have no fear of ice cold beer tells you the diatomic atoms and the states

Answer 21

I2 is a solid (ice) and Br2 is a liquid (beer)
H2, N2, F2, O2, I2, Cl2, Br2

Question 22

standard formation is forming 1 mol of the products from pure elements

Question 23

Entropy is chaos denoted as (dS)

Answer 23

chaos

Question 24

dS = q/T

Answer 24

Entropy is a cutie (q-t)

Question 25

determining entropy look at which side has more moles of ___

Answer 25

gas

Question 26

Entropy can have a change in phase OR change in temperature. NOt both @ same time

Question 27

The Second law of thermodynanics is “sad” because it is ______

Answer 27

irreversible

Question 28

The third law of therm is a “tie” because to have 0K it needs to be a perfect ___

Question 29

dG = dH - TdS

Answer 29

change in gibs is equl to the change in enthaly -temperaturexchangein entropy

Question 30

dG = RTln(Q/K)

Question 31

it is an intensive property if it is divided by a mass

Question 32

dG has to be ___ for it to be spont

Answer 32

negative

Question 33

Fusion is going from a solid to a ___

Answer 33

liquid

Question 34

sublimation is solid to a ___. “sublimation starts as a solid”

Answer 34

gas

Question 35

deposition is gas to a ___

Answer 35

solid

Question 36

Triple point occurs at the intersection of the three phase-transition lines. at this point, all three phases are in ____

Answer 36

equilibrium

Question 37

q = mcdT

Answer 37

c is heat capacity