The spontaneity of some reactions is temperature-dependent. Spontaneous or non
spontaneous at high and low temps?
2) Both ΔH and ΔS are negative.
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Spontaneous at low temperatures and nonspontaneous at high
temperatures.
The calculated ΔS value tells us what?
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If the process is spontaneous or nonspontaneous
,Define with example: Kinetic Energy
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Kinetic energy - the energy that an object possesses because of its motion.
Example: The object on a high shelf would turn from potential energy to
kinetic energy if it fell off the shelf.
Define with example: irreversible process
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the system and its surroundings do not return to their original condition
after initiation. Is not able to go back to original state. Example: Iron that
rusts.
If the calculated ΔS value is positive (+) then the reaction will be spontaneous or
nonspontaneous?
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spontaneous (increasing disorder or chaos in lab)
The spontaneity of some reactions is temperature-dependent. Spontaneous or non
spontaneous at high and low temps?
3) ΔH is positive, and ΔS is negative.
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Nonspontaneous at all temperatures.
Calculate the entropy change in the universe (ΔSuniv) for a system at 300 K under the
following conditions: the ΔS is 41.2 J/K and requires 9,500 J (qsurr = -9,500 J) of heat.
Calculate your answer to 3 significant figures and report your answer with the
appropriate units. Show your work, including the original equation.
Then state if the process will be spontaneous or nonspontaneous. Explain/support
your answer using the value of your calculation for ΔSuniv.
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ΔSuniv = ΔSsys + (qsurr ÷ T)
ΔSuniv = 41.2 J/K + (-9,500 J ÷ 300 K)
ΔSuniv = 9.53 J/K (spontaneous – positive value)
Define with example: nonspontaneous process
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Nonspontaneous process- requires continual energy input from external
source to occur. Example: a ball rolling uphill.
The spontaneity of some reactions is temperature-dependent. Spontaneous or non
spontaneous at high and low temps?
4) ΔH is negative, and ΔS is positive.
spontaneous at high and low temps?
2) Both ΔH and ΔS are negative.
Give this one a try later!
Spontaneous at low temperatures and nonspontaneous at high
temperatures.
The calculated ΔS value tells us what?
Give this one a try later!
If the process is spontaneous or nonspontaneous
,Define with example: Kinetic Energy
Give this one a try later!
Kinetic energy - the energy that an object possesses because of its motion.
Example: The object on a high shelf would turn from potential energy to
kinetic energy if it fell off the shelf.
Define with example: irreversible process
Give this one a try later!
the system and its surroundings do not return to their original condition
after initiation. Is not able to go back to original state. Example: Iron that
rusts.
If the calculated ΔS value is positive (+) then the reaction will be spontaneous or
nonspontaneous?
Give this one a try later!
spontaneous (increasing disorder or chaos in lab)
The spontaneity of some reactions is temperature-dependent. Spontaneous or non
spontaneous at high and low temps?
3) ΔH is positive, and ΔS is negative.
, Give this one a try later!
Nonspontaneous at all temperatures.
Calculate the entropy change in the universe (ΔSuniv) for a system at 300 K under the
following conditions: the ΔS is 41.2 J/K and requires 9,500 J (qsurr = -9,500 J) of heat.
Calculate your answer to 3 significant figures and report your answer with the
appropriate units. Show your work, including the original equation.
Then state if the process will be spontaneous or nonspontaneous. Explain/support
your answer using the value of your calculation for ΔSuniv.
Give this one a try later!
ΔSuniv = ΔSsys + (qsurr ÷ T)
ΔSuniv = 41.2 J/K + (-9,500 J ÷ 300 K)
ΔSuniv = 9.53 J/K (spontaneous – positive value)
Define with example: nonspontaneous process
Give this one a try later!
Nonspontaneous process- requires continual energy input from external
source to occur. Example: a ball rolling uphill.
The spontaneity of some reactions is temperature-dependent. Spontaneous or non
spontaneous at high and low temps?
4) ΔH is negative, and ΔS is positive.
