hh hh hh hh
QUESTIONS WITH CORRECT ANSWERS 2025
hh hh hh hh
Enthalpy hh(H) hhis hhnegative hh- hhCORRECT hhANSWER hh-exothermic--
hhflows hhfrom hhthe hhsystem hhinto hhthe hhsurroundings
Enthalpy hh(H) hhis hhpositive hh- hhCORRECT hhANSWER hh-
endothermic-- hhflows hhfrom hhthe hhsurroundings hhinto hhthe
hhsystem
Entropy hh(S) hhis hhnegative hh- hhCORRECT hhANSWER hh-randomness hhof hhthe hhsystem hhdecreases
Entropy hh(S) hhis hhpositive hh- hhCORRECT hhANSWER hh-randomness hhof hhthe hhsystem hhincreases
Entropy: hhstate hhfunction hhor hhnah? hh- hhCORRECT hhANSWER hh-
hhentropy hhis hha hhstate hhfunction hh(Change hhin hhS= hhS(final)-S(initial)
Temperature hh(entropy) hh- hhCORRECT hhANSWER hh-
as hhtemperature hhincreases hhthe hhrandom hhmolecular hhmotion hhincreases hh--
> hhkinetic hhenergy hhof hhmolecules hhincrease hh--. hhTherefore hhentropy hhincreases
1st hhlaw hhof hhThermodyamics hh- hhCORRECT hhANSWER hh--
in hhany hhprocess, hhspontaneous hhor hhnon hhspontaneous, hhthe hhtotal hhenergy hhof hha hhsystem hh& hhits
hhsurroundings hhis hhconstant
2nd hhlaw hhof hhThermodynamics hh- hhCORRECT hhANSWER hh--
the hhprinciple hhthat hhthe hhtotal hhentropy hhof hhthe hhuniverse hhincreases hhin hhany hhspontaneous hhprocess
-changesuniverse=changessys+changessurr
Changsuniverse hh(signs) hh- hhCORRECT hhANSWER hh-S>0E= hhspontaneous
S<0 hh= hhnon hhspontaneous
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