Which system has the higher entropy? (a) A clean kitchen or a dirty kitchen? (b) A blackboard with writing on it or a completely erased blackboard? (c) 1 g of ice at 0 ° C or 10 g of ice at 0 ° C ? (d) 1 g of ice at 0 K or 10 g of ice at 0 K ? (e) 10 g of ethyl alcohol, C 2 H 5 OH , at 22 ° C (roughly room temperature) or 10 g of ethyl alcohol at 2 ° C (the approximate temperature of a cold drink)?
Which system has the higher entropy? (a) A clean kitchen or a dirty kitchen? (b) A blackboard with writing on it or a completely erased blackboard? (c) 1 g of ice at 0 ° C or 10 g of ice at 0 ° C ? (d) 1 g of ice at 0 K or 10 g of ice at 0 K ? (e) 10 g of ethyl alcohol, C 2 H 5 OH , at 22 ° C (roughly room temperature) or 10 g of ethyl alcohol at 2 ° C (the approximate temperature of a cold drink)?
Solution Summary: The author explains that the randomness present in the system is called its entropy. It is an extensive property.
Which system has the higher entropy? (a) A clean kitchen or a dirty kitchen? (b) A blackboard with writing on it or a completely erased blackboard? (c)
1
g
of ice at
0
°
C
or
10
g
of ice at
0
°
C
? (d)
1
g
of ice at
0
K
or
10
g
of ice at
0
K
? (e)
10
g
of ethyl alcohol,
C
2
H
5
OH
, at
22
°
C
(roughly room temperature) or
10
g
of ethyl alcohol at
2
°
C
(the approximate temperature of a cold drink)?
The number of microstates corresponding to each macrostate is given by N. The dominant macrostate or configuration of a system is the macrostate with the greatest weight W. Are both statements correct?
For the single step reaction: A + B → 2C + 25 kJ
If the activation energy for this reaction is 35.8 kJ, sketch an energy vs. reaction coordinate diagram for this reaction. Be sure to label the following on your diagram: each of the axes, reactant compounds and product compounds, enthalpy of reaction, activation energy of the forward reaction with the correct value, activation energy of the backwards reaction with the correct value and the transition state.
In the same sketch you drew, after the addition of a homogeneous catalyst, show how it would change the graph. Label any new line "catalyst" and label any new activation energy.
How many grams of C are combined with 3.75 ✕ 1023 atoms of H in the compound C5H12?
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The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY