2. When an isolated system undergoes a reversible process, A. It is isentropic. B. The entropy increases. C. The entropy decreases. D. Entropy stays the same. 3. If an ideal gas undergoes a process, its entropy A. Depends on the changes in pressure. B. Depends on the changed in temperature. 4.. What is false among the statements below? A. If a process is reversible, there would be no change in entropy. B. If a process is irreversible, the entropy increases. C. The entropy of the universe is always towards the maximum. D. When a process undergoes an adiabatic, reversible process the entropy changes. 5. When gases have the same volume, this represents their A. Densities B. Specific weights C. Molecular weights D. Specific gravities 6. Among the items listed, which does not belong to the system? A. Pressure B. Temperature C. Density D. Heat

2. When an isolated system undergoes a reversible process, A. It is isentropic. B. The entropy increases. C. The entropy decreases. D. Entropy stays the same. 3. If an ideal gas undergoes a process, its entropy A. Depends on the changes in pressure. B. Depends on the changed in temperature. 4.. What is false among the statements below? A. If a process is reversible, there would be no change in entropy. B. If a process is irreversible, the entropy increases. C. The entropy of the universe is always towards the maximum. D. When a process undergoes an adiabatic, reversible process the entropy changes. 5. When gases have the same volume, this represents their A. Densities B. Specific weights C. Molecular weights D. Specific gravities 6. Among the items listed, which does not belong to the system? A. Pressure B. Temperature C. Density D. Heat

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Similar questions

Which of the following statements is false? a. Entropies of ionic solids that have similar formulas are larger when the attractions among the ions are stronger. b. Entropy usually decreases when a gas is dissolved in a liquid. c. Entropy usually increases when a pure liquid or solid dissolves in a solvent. d. Entropies of more complex molecules are larger than those of simpler molecules. e. Entropies of gases are usually much larger that those of liquids, which in turn are usually larger than those of solids.
If a reaction does not move forward and backward (meaning only move to one direction; could be product favored, could be reactant favored under these conditions), what is true about entropy and enthalpy? a. ΔH°rxn < 0 and ΔS°rxn > 0. b. ΔH°rxn < 0 and ΔS°rxn < 0. c. ΔH°rxn > 0 and ΔS°rxn < 0. d. ΔH°rxn > 0 and ΔS°rxn > 0. e. both a and c are correct
4. A particular endothermic process results in an decrease in system entropy; therefore, the G value is _________ and the process is _____________. a. negative; spontaneous b. negative; nonspontaneous c. positive; spontaneous d. positive; nonspontaneous
Indicate whether each process is spontaneous or nonspontaneous. a. water vapor condensing at 50 °C b. salt crystallizing from an unsaturated solution. c. a cold drink warming up in the hot sun d. carbon dioxide bubbling out of a warm soda e. salt and sand particles separating themselves in a mixture f. all the oxygen in a room condensing at one spot
Which of the following is true ? X. Exothermic reactions are spontaneous because formation of products is favored by decrease of free energy of the system Y. All spontaneous reactions accompanied by increase of entropy of the universum. Z. All spontaneous reactions accompanied by increase of entropy of the system. * Y only * X, Y and Z * Y and Z only * X only * X and Z only * Z only * X and Y only * none of them
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Which of the following is non-spontaneous? A. Rain falls from the sky B. A plant grows into a tree C. A fruit rots after several days D. A cellphone battery is being recharged
According to the third law of thermodynamics, at what temperature will entropy become zero? A. 0° B. 25°C C. 0K D. 273 K
To reach thermodynamic equilibrium under certain constraints, some state functions need to be maximized. Among the following, which one should be maximized?A. The enthalpy, HB. The internal energy, UC. The entropy, S a spontaneous processA. It is reversible.B. It is irreversible.C. It can be reversible or irreversible depending on whether equilibrium is maintained throughout the process.D. It can be reversible or irreversible depending on the value of ∆?. Justify all the alternatives.
5. Which of the following has a negative DS? A. Dissolve salt in water B. Heating chlorine vapors C. Heating a pure liquid D. Deposition of a gas to a solid 6. Which of the following has a negative DS? A. Melting ice B. Freezing liquid bromine C. Subliming a solid to a gas D. Evaporating water 7. What is defined as the phenomenon where the entropy of the universe increases in a spontaneous process and is constant in an equilibrium process? A. The law of spontaneity B. The 1st law of thermodynamics C. The 2nd law of thermodynamics D. The 3rd law of thermodynamics.
What of the following options describes the term "entropy, S"? O a. If a process or reaction is carried out in multiple steps, the sum of the enthalpy changes for these steps is the same as the enthalpy change if the entire reaction was carried out in a single step. O b. An indication that a process is capable of proceeding in a given direction without needing to be driven by an outside source of energy. O c. A thermodynamic function which measures the dispersal of energy amongst the particles in a substance. O d. The substances or material being studied in an experiment. For a chemical reaction, the system is all of the atoms in the substances undergoing the reaction. O e. Everything outside of the system.