Homework Answers
Boltzman's formula for entropy is
S = k ln W
Where, k is Boltzman's constant
W is number of microstates
Entropy is related to the number of possible microstates, and at
zero kelvin only one microstate is available.
So, Entropy = k ln(1) = 0.
Thus, Boltzman's formulation for entropy is consistent with third law of thermodynamics.
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Question 9 Third Law of Thermodynamics states entropy is _when at zero kelvin and in a crystal (1 point) * infinite none one O zero Question 10 Second Law of Thermodynamics states entropy is ___always for the Universe (1 point) infinite O negative O positive O zero
8. The second law of thermodynamics states that A) Delta E=g+w
B) Delta H^ 0 rrn =Sigma nDelta H^ f(products)-Sigma mDelta H^
f(reac reactants) C) for any spontaneous process, the entropy of
the universe increases D) the entropy of a pure crystalline
substance is zero at absolute zero E) Delta S=q rcv /T at constant
temperature
D) zero E) the same as the energy, E 8. The second law of thermodynamics states that A) AE - 9+ w B) AHørxn...
Q1. a. At absolute zero temperature, the entropy of a pure crystalline substance is zero. Justify the statement. Why entropy becomes zero at absolute zero temperature. b. A metal rod is keeping in a moisture surrounding for long time. From your thermodynamics basics explain whether this rod is under thermodynamic equilibrium or not? Give reasons for the same. c. Explain the application of thermodynamics based on any two components of automobile.
With respect to the third law of thermodynamics, which statement is not coerect? AtOK for a substance, almost all of the themal neyhas been removed from the system. A substance that is perfectly crystalline at 0 K has perfect order(i.e.,S-0). To calculate ST-S%, we need a reference point where S-O At 0 K for a substance, we have a periect crystal. There is as much order as possible, with every molecule aligned and coTectly packed
1. True or False: a) A reaction is spontaneous if ΔSnn > 0. b) The Fourth Law of Thermodynamics states: The entropy of a pure, perfect crystal at O K is. c) For A(g) + B(g) D(g) + E(g), if ΔΗ'm < 0 and Δ5%n > 0, the reaction is spontaneous regardless of temperature. d) For A(g) + B(g) → D(g) + E(g), ifAH"m > 0 and Δ5%n < 0, it will be possible to find a temperature above which...
4 As implied in the 3rd Law of Thermodynamics, a temperature of absolute zero, OK, can be attained a) True b) False c) Impossible to determine
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