BSCI207 Thermodynamics Introduction

Ch1 Thermodynamics


Gue #18128124

Laws
-

Thermodynamics= Study of energy + its transformation

↳ determines exch in sys + ability to preform work
energy

-
1) energy only transformed 10t created/destroyed

2) every spontaneous x ind entropy of universe

Concepts ↳ unqualiability of system's thermal energy

-

rea for mech work ,
randomness




-

enthalpy (H) : used when temp + pressure constant to find total energy

-
AH = H
final state of rx-Hinitial state of x
(prod-reactants)

-
+OH =
energy added (products > rectants)

↳ endothermic Enters
heat
,


- -
SH =
energy removed (products creactants (

↳ exothermic , next Exits

-
free energy (6) : energy in system used ao
to work


-
same 16 en

-
more than I molecula ? A + BC+ 1) 16 =
Gc + Cp-Ga-6p

- + 16 =
enclargonic ,
free energy Enters

- - A 6 = exersonic ,
free energy Exits

-
entropy (S) : and disorder in system

-
same &S en

-taS = products more disordered

- -
AS = products less disordered

Egs and Laws in
Biology
-
total energy is conserved

-
SH = 16 + TAS CT = abstemp in 1)



b
↳ chemical work (10) + heat that inc disorder (TSS)

total energy of system

-

entropy of universe is inc be release energy Cey heat) inc disorder

-
16 = SH -
TAS

- -
16 =
Spontaneous incentropy of universe , decentropy of system
,



-
+ 16 = non-sport , want occur was input of energy Cey ATP)

- still dec entropy of system be energy in put is released as heat