CLEMSON CHEMISTRY 1020 EXAM 1
QUESTIONS WITH CORRECT ANSWERS 2025
Enthalpy (H) is negative - CORRECT ANSWER -exothermic--
flows from the system into the surroundings
Enthalpy (H) is positive - CORRECT ANSWER -endothermic--
flows from the surroundings into the system
Entropy (S) is negative - CORRECT ANSWER -randomness of the system decreases
Entropy (S) is positive - CORRECT ANSWER -randomness of the system increases
Entropy: state function or nah? - CORRECT ANSWER -
entropy is a state function (Change in S= S(final)-S(initial)
Temperature (entropy) - CORRECT ANSWER -
as temperature increases the random molecular motion increases --
> kinetic energy of molecules increase --. Therefore entropy increases
1st law of Thermodyamics - CORRECT ANSWER --
in any process, spontaneous or non spontaneous, the total energy of a system & its surroundings
is constant
2nd law of Thermodynamics - CORRECT ANSWER --
the principle that the total entropy of the universe increases in any spontaneous process
-changesuniverse=changessys+changessurr
Changsuniverse (signs) - CORRECT ANSWER -S>0E= spontaneous
S<0 = non spontaneous
QUESTIONS WITH CORRECT ANSWERS 2025
Enthalpy (H) is negative - CORRECT ANSWER -exothermic--
flows from the system into the surroundings
Enthalpy (H) is positive - CORRECT ANSWER -endothermic--
flows from the surroundings into the system
Entropy (S) is negative - CORRECT ANSWER -randomness of the system decreases
Entropy (S) is positive - CORRECT ANSWER -randomness of the system increases
Entropy: state function or nah? - CORRECT ANSWER -
entropy is a state function (Change in S= S(final)-S(initial)
Temperature (entropy) - CORRECT ANSWER -
as temperature increases the random molecular motion increases --
> kinetic energy of molecules increase --. Therefore entropy increases
1st law of Thermodyamics - CORRECT ANSWER --
in any process, spontaneous or non spontaneous, the total energy of a system & its surroundings
is constant
2nd law of Thermodynamics - CORRECT ANSWER --
the principle that the total entropy of the universe increases in any spontaneous process
-changesuniverse=changessys+changessurr
Changsuniverse (signs) - CORRECT ANSWER -S>0E= spontaneous
S<0 = non spontaneous