Chem560B first exam
Terms
undefined, object
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- ION
- A PARTICLE THAT IS ELECTRICALLY CHARGED NEGATIVE (ANION) OR POSITVE (CATION)
- IONIZE
- TO CONVERT INTO IONS BY DISSASSOCIATION
- ELECTRON
- A STABLE PARTICLE WITH A NEGATIVE CHARGE
- PROTON
- A STABLE PARTICLE WITH A POSTITIVE CHARGE
- BASAL METABOLIC RATE (BMR)
- AMOUNT OF O2 NEEDED OR CONSUMED AT REST
- EFFICIENT
- THE USE OF ENERGY
- 2ND LAW OF THERMODYNAMICS
- (change in)FREE ENERGY=(change in)ENTHALPY-TEMP(change in)ENTRAPY
- FREE ENERGY = G
-
LEFTOVER FROM REACTIONS
MODULATES DISORDER
-DELTA G IS SPONTANEOUS, NEGATIVE BECAUSE LOSS OF ELECTRONS - ENTRAPY = S
-
DISORDER
RESULT OF NO ENERGY
THE MORE POSITIVE THE TERM +DELTA G, THE MORE DISORDER, BECASUE NOT SPONTANEOUS REACT - ENTHALPY = H
- HEAT ENERGY
- EXOTHERMIC
-
PREFERRED BY SYSTEM!
-delta G
LOSS OF ELECTRONS OR ENERGY
HEAT OUT=ENERGY OUT - ENDOTHERMIC
-
+delta G
HEAT IN = NO ENERGY OUT - POLAR
-
SHARING ELCTRONS
e- UNEVEN DISTRIBUTION
LIPID IS POLAR
PROTEIN IN NONPOLAR - TEMPERATURE = T
-
HIGHER TEMP = MORE DOSORDER
NOT RELEVANT TO HUMAN
H20 ABSORBS HEAT W/OUT CHANGING TEMP - POLARITY OF H2O
-
O SHARING e-
VERY ELECTRONEGATIVE
e- PULLED TOWARD O - KA = DISSOCIATION OF WATER
-
KA = OH-H / H20
MEASURES ACID STREGNTH
REMOVE A PROTON - TAKE ALL BUT PROTON
LOW KA = WEAK ACID - HYDRONIUM ION
- THE H+ BONDED TO H30
- POH
-
THE NEGATIVE LOARITHIM OF {HYDRONIUM ION}
POH + PH MUST = 14