Entropy is the inclination for things to increase their level of
disorder.
eg. If you buy a puzzle in a box and you shake it really hard
the pieces become more disorganized, near fall back into their
proper place.
APEX ANSWER: Entropy measures the disorder in a system
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Term1/19
Which of the following describes the entropy change of a gas reaction
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Definition1/19
If there is an increase in the number of gas molecules, then S > 0.
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Term1/19
How does entropy change in gas reactions
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Definition1/19
Reactions that increase the moles of gas will increase in
entropy.
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Term1/19
What could make G become negative at a given enthalpy and entropy
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Definition1/19
Changing the temperature
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Term1/19
What determines how fast a reaction happens
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Definition1/19
Kinetics
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Term1/19
What would happen to the rate of a reaction with rate law kNO2H2 if the concentration of NO were doubled
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Definition1/19
the rate would be four times larger. apex
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Term1/19
How much energy is generated from freezing 2.5 g water
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Definition1/19
2.5 g 1 mol/18.02 g (-285.83) kJ/mol
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Term1/19
What describes the difference between the mechanics of airplane flight and rocket flight
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Definition1/19
The difference is that you are a mamaguevo y yo se lo meto a tu
hermana.
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Term1/19
What is the purpose of the flame that is lit below a hot air ballon
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Definition1/19
That flame is the source of heat for the hot air in the hot air
balloon.
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Term1/19
How is the H fusion used to calculate the mass of solid that 1kJ of energy will melt
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Definition1/19
1kj x 1/H fusion x g/mol solid
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Term1/19
What does the enthaply of reaction measure
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Definition1/19
The enthalpy of reaction is the change of the system enthalpy after a chemical reaction.
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Term1/19
If you need to reverse the following reaction in order for it to be an intermediate reaction in a Hess's law problem what would be the final value for the enthalpy of reaction you use for this in
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Definition1/19
1410 kJ
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Term1/19
How is the H fusion used to calculate the energy released when a mass of liquid freezes
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Definition1/19
grams liquid x mol/g x H fusion
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Term1/19
What temperature is the reaction at equilibrium
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Definition1/19
The temperature will depend on the reaction that is under
consideration.
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Term1/19
How is temperature affect the spontaneity of a reaction with positive H and S
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Definition1/19
∆G = ∆H - T∆S and ∆G has to be negative for the reaction to be spontaneous. So, ultimately the effect of temperature will depend on the value of ∆H. If ∆H is negative, and ∆S is positive, then temperature won't matter, and reaction will be spontaneous. If ∆H is positive, and ∆S is positive, then a high temperature will favor spontaneity. If ∆H is negative and ∆S is negative, then a low temperature will favor spontaneity. So, the answer to your question is the higher the temperature the more likely the reaction will occur spontaneously.
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Term1/19
How is Hess's law used to measure enthalpy of desired reaction
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Definition1/19
Intermediate equations with known enthalpies are added together
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Term1/19
The size of a rocket's cargo determines the amount of thrust the engine must create to carry the rocket into outer space. What is another term for this cargo
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Definition1/19
Payload (apex)
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Term1/19
What does the second law of thermodynamics say apex
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Definition1/19
The entropy of the universe is increasing
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Term1/19
What describes the study of how energy is transferred to different locations and forms
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Definition1/19
Force
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Cards in this guide (19)
What does entropy measure
Entropy is the inclination for things to increase their level of
disorder.
eg. If you buy a puzzle in a box and you shake it really hard
the pieces become more disorganized, near fall back into their
proper place.
APEX ANSWER: Entropy measures the disorder in a system
Which of the following describes the entropy change of a gas reaction
If there is an increase in the number of gas molecules, then S > 0.
How does entropy change in gas reactions
Reactions that increase the moles of gas will increase in
entropy.
What could make G become negative at a given enthalpy and entropy
Changing the temperature
What determines how fast a reaction happens
Kinetics
What would happen to the rate of a reaction with rate law kNO2H2 if the concentration of NO were doubled
the rate would be four times larger. apex
How much energy is generated from freezing 2.5 g water
2.5 g 1 mol/18.02 g (-285.83) kJ/mol
What describes the difference between the mechanics of airplane flight and rocket flight
The difference is that you are a mamaguevo y yo se lo meto a tu
hermana.
What is the purpose of the flame that is lit below a hot air ballon
That flame is the source of heat for the hot air in the hot air
balloon.
How is the H fusion used to calculate the mass of solid that 1kJ of energy will melt
1kj x 1/H fusion x g/mol solid
What does the enthaply of reaction measure
The enthalpy of reaction is the change of the system enthalpy after a chemical reaction.
If you need to reverse the following reaction in order for it to be an intermediate reaction in a Hess's law problem what would be the final value for the enthalpy of reaction you use for this in
1410 kJ
How is the H fusion used to calculate the energy released when a mass of liquid freezes
grams liquid x mol/g x H fusion
What temperature is the reaction at equilibrium
The temperature will depend on the reaction that is under
consideration.
How is temperature affect the spontaneity of a reaction with positive H and S
∆G = ∆H - T∆S and ∆G has to be negative for the reaction to be spontaneous. So, ultimately the effect of temperature will depend on the value of ∆H. If ∆H is negative, and ∆S is positive, then temperature won't matter, and reaction will be spontaneous. If ∆H is positive, and ∆S is positive, then a high temperature will favor spontaneity. If ∆H is negative and ∆S is negative, then a low temperature will favor spontaneity. So, the answer to your question is the higher the temperature the more likely the reaction will occur spontaneously.
How is Hess's law used to measure enthalpy of desired reaction
Intermediate equations with known enthalpies are added together
The size of a rocket's cargo determines the amount of thrust the engine must create to carry the rocket into outer space. What is another term for this cargo
Payload (apex)
What does the second law of thermodynamics say apex
The entropy of the universe is increasing
What describes the study of how energy is transferred to different locations and forms