(a)
Interpretation:
Whether the entropy change is positive or negative for the process ‘carbon dioxide decomposes to its elements carbon and oxygen’ has to be predicted.
Concept Introduction:
The entropy of a system is the randomness created by the molecules. The order of entropy is
(b)
Interpretation:
Whether the entropy change is positive or negative for the process of rusting of steel body has to be predicted.
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
Whether the entropy change is positive or negative for the process
‘Gasoline reacts with oxygen to form carbon dioxide and water’ has to be predicted.
Concept Introduction:
Refer to part (a).
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Chemistry: The Molecular Science
- Describe the energy and entropy changes that occur in the following processes, and indicate whether the processes are spontaneous under the conditions stated: a.Lumber becomes a house b.A seed grows into a tree. c.On a hot day, water evaporates from a lake.arrow_forwardFor each process, tell whether the entropy change of the system is positive or negative. (a) A glassblower heats glass (the system) to its softening temperature. (b) A teaspoon of sugar dissolves in a cup of coffee. (The system consists of both sugar and coffee.) (c) Calcium carbonate precipitates out of water in a cave to form stalactites and stalagmites. (Consider only the calcium carbonate to be the system.)arrow_forwardReword the statement in Question 109 so that it is always true. Criticize this statement: Provided it occurs at an appreciable rate, any chemical reaction for which rG 0 will proceed until all reactants have been converted toproducts.arrow_forward
- The molecular scale pictures below show snapshots of a strong acid at three different instants after it is added to water. Place the three pictures in the correct order so that they show the progress of the spontaneous process that takes place as the acid dissolves in the water. Explain your answer in terms of entropyarrow_forwardDefine the term entropy, and give an example of a sample of matter that has zero entropy. What are the units of entropy? How do they differ from the units of enthalpy?arrow_forwardFor the ammonia synthesis reaction ⇌ Does the entropy effect favor products? Explain your answer. Does the energy effect favor products? Explain your answer. Is the equilibrium concentration of NH3(g) greater at high or low temperature? Explain.arrow_forward
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