thermodynamic systems

Question 1

what are the type of systems

Answer 1

isolated - no exchange of energy or mass
closed - exchange of energy but no exchange of mass
open - exchange of energy and mass

Question 2

what are the types of closed systems

Answer 2

isobaric: constant pressure
isothermal: constant temp
isochoric: constant volume

Adiabatic: no heat flows between the system and surroundings

Question 3

what is the first law of thermodynamics

Answer 3

the internal energy of an isolated system is constant

Question 4

for first law of thermodynamics where only heat flow and only work occurs what is deltaU equal to
what is deltaIU equal to when both work is done and head flow occurs

Answer 4

only heat flow: combined energy of system and surroundings must be constant, deltaU = q

only work: deltaU= w

DeltaU= q + w

Question 5

what is the difference between reversible and non-reversible process

Answer 5

Direction of reversible can be changed by making small changes to a variable while for non-reversible a large change is required

Question 6

what is a state function

Answer 6

a property of system depending on the systems state not on how it got there

Question 7

what is a path function

Answer 7

a parameter that depends on the way a system changed from one state to another, when talking about changes of path function use dbar