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Entropy
Quiz 1
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Q.1
Systems in nature tend to undergo changes toward
lower energy and less disorder
lower energy and more disorder
higher energy and less disorder
higher energy and more disorder
Q.2
Is cellular respiration an Endothermic or an Exothermic reaction? [Hint: body is warm]
Endothermic
Exothermic
Q.3
The entropy will usually increase when
a molecule is broken into two or more smaller molecules
a reaction occurs that results in an increase in the number of moles of gas
a solid changes to a liquid
all of these
Q.4
When a system has a huge number of particles, higher entropy states are overwhelmingly more likely to occur.
True
False
Q.5
Given the change of phase: CO2(g) →\rightarrow→ CO2(s)As CO2(g) changes to CO2(s), the entropy of the system
decreases
increases
remains the same
Q.6
Predict the entropy change for this reaction N2O4(g)N_2O_4\left(g\right)N2O4(g) → 2NO2(g)2NO_2\left(g\right)2NO2(g)
ΔS = +ve and non spontaneous
ΔS = -ve and spontaneous
ΔS = -ve and non spontaneous
ΔS = +ve and spontaneous
Q.7
The reaction A + 2 B2 + C --> CAB4 has an enthalpy change of -kJ and a change in entropy of -60.8 J/K at°C. What is the free energy and spontaneity of the reaction?
-85.6 kJ, spontaneous
-18.3 kJ, not spontaneous
+18.3 kJ, spontaneous
+85.6 kJ, not spontaneous
Q.8
For the following reaction indicate if entropy is increased or decreased. 2 Li(s) +H2O(l) ---->2 LiOH(s) + H2(g) + 213.0 kJ (Kilojoules)
increase
decrease
Q.9
This will be the last question, hope you enjoyed it and keep safe always.
Yes I enjoyed it.
parang ewan po yung quiz, didn't enjoy it.
Okay naman po yung quiz. wag nalang pong uulitin.
All of above
Q.10
It is the amount of disorder in a system.
Enthalpy
Entropy
Entrolpy
Enthralpy
Maybe Entropy or Enthalpy, they are the same ya know.
Q.11
If Ice melts, its entropy increases.
Trulala
Falsemama
It will not change. So... none of the above.
Q.12
Entropy of Gases is greater than that of Solid.
Trulala
Falsemama
It will not change. So... none of the above.
Q.13
Entropy of Solid is greater than that of Gases.
Trulala
Falsemama
It will not change. So... none of the above.
Q.14
Which of the following is non-spontaneous?
Evaporating Water
Cooling down of hot water
Condensing Water Vapor
Solidifying of Magma
Q.15
Which of the following is a spontaneous process will give the lowest entropy after the process?
Evaporating Water
Cooling down of hot water
Condensing Water Vapor
Solidifying of Magma
Q.16
Which of the following is a spontaneous process will give the highest entropy after the process?
Evaporating Water
Cooling down of hot water
Condensing Water Vapor
Solidifying of Magma
Q.17
When gases are produced, Entropy is ____________.
Greater than zero
Lesser than zero
Equal to zero
Entropy wiill not be equal to zero, so its either of the two.
Q.18
When gases are absorbed, Entropy is ____________.
Greater than zero
Lesser than zero
Equal to zero
Entropy wiill not be equal to zero, so its either of the two.
Q.19
Which law of thermodynamics refers to the Entropy of the Universe?
Zeroth Law
First Law
Second Law
Third Law
Fourth Law (if ever there is, because I want to answer the most unreal choice)
Q.20
Entropy of Liquid is greater than that of Solid.
Trulala
Falsemama
It will not change. So... none of the above.
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