Chem 102 - General Chemistry II » Winter 2021 » Quiz 4

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Question #1
When heat flows from a hot object to its surround, it is an example of a ___.
A.   No answer text provided.
B.   non-spontaneous process
C.   spontaneous process
D.   None of the above
Question #2
Which below is an accurate statement of entropy?
A.   A measure of how dispersed the energy of a system is among the different possible ways that a system can contain energy
B.   It is a state function and It can be produced or created during a spontaneous process
C.   It is a thermodynamic quantity
D.   A measure of how dispersed the energy of a system is among the different possible ways that a system can contain energy, It is a thermodynamic quantity, It is a state function, and It can be produced or created during a spontaneous process
Question #3
In a Spontaneous Process, the Entropy (S) of a System + its Surrounding always increases.
A.   FALSE
B.   TRUE
Question #4
What is the 2nd Law of Thermodynamics?
A.   delta T > q / S
B.   delta S = q / T
C.   delta S > q / T
Question #5
When dinitrogen tetroxide decomposes (N2O5) into two nitrogen dioxide molecules (NO2), is it’s molecular motion more ordered or more disordered?
A.   more ordered
B.   more disordered
Question #6
Consider the equation: CCl4(l) --> CCl4(g) The heat of vaporization (∆Hvap) of CCl4 (carbon tetrachloride) at 25oC is 38.4 kJ/mol. If 1 mol of liquid CCl4 at 25oC has an entropy of 198 J/K, what is the entropy of 1 mol of the vapor in equilibrium with the liquid at this temperature?
A.   316.9 J/K
B.   326.9 J/K
C.   336.9 J/K

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