Limestone is predominantly CaCO 3 , which can undergo the reaction CaCO 3 ( s ) → CaO ( s ) + C O 2 ( g ) . We know from experience that this reaction is not spontaneous, yet Δ S for the reaction is positive. How can the second law of thermodynamics explain that this reaction is not spontaneous?
Limestone is predominantly CaCO 3 , which can undergo the reaction CaCO 3 ( s ) → CaO ( s ) + C O 2 ( g ) . We know from experience that this reaction is not spontaneous, yet Δ S for the reaction is positive. How can the second law of thermodynamics explain that this reaction is not spontaneous?
Solution Summary: The author explains that the second law of thermodynamics is not violated despite a positive entropy change.
Limestone is predominantly CaCO3, which can undergo the reaction
CaCO
3
(
s
)
→
CaO
(
s
)
+
C
O
2
(
g
)
. We know from experience that this reaction is not spontaneous, yet
Δ
S
for the reaction is positive. How can the second law of thermodynamics explain that this reaction is not spontaneous?
Definition Definition Number that is expressed before molecules, ions, and atoms such that it balances out the number of components present on either section of the equation in a chemical reaction. Stoichiometric coefficients can be a fraction or a whole number and are useful in determining the mole ratio among the reactants and products. In any equalized chemical equation, the number of components on either side of the equation will be the same.
Suppose the rate of evaporation in a hot, dry region is 1.76 meters per year, and the seawater there has a salinity of 35 ‰. Assuming a 93% yield, how much salt (NaCl) can be harvested each year from 1 km2 of solar evaporation ponds that use this seawater as a source?
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Chapter 10 Solutions
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