All of the following statements about entropyare true EXCEPT for:1. it is a measure of the energy dispersal.II. the natural tendency is for it to remainconstant.II. it is not a state function under allconditions.IV. its calculation is possible for isothermalprocesses.A. III and IV onlyB. Il and IlI onlyC. I, Il and III onlyD. I and Il only

All of the following statements about entropy are true EXCEPT for: I. it is a measure of the energy dispersal. II. the natural tendency is for it to remain constant. III. it is not a state function under all conditions. IV. its calculation is possible for isothermal processes. A. III and IV only B. Il and III only C. I, Il and III only D. Land II only

All of the following statements about entropy are true EXCEPT for: I. it is a measure of the energy dispersal. II. the natural tendency is for it to remain constant. III. it is not a state function under all conditions. IV. its calculation is possible for isothermal processes. A. III and IV only B. Il and III only C. I, Il and III only D. Land II only

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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4. Which of the following processes will have the largest positive value for the entropy change in the surroundings? ASsume state 1 has higher pressure and lower temperature than does state 2, and both states contain 1.00 mole of a monatomic perfect gas. a. a reversible process from state 1 to state 2 b. an irreversible process from state 1 to state 2 c. a reversible process from state 2 to state 1 d. an irreversible process from state 2 to state 1 e. cannot be determined from the information given
Which of the following variables tells us about the extent of a reaction in thermodynamics? a. kforward b. Keq c. RT d. Ea
Which one of the following thermodynamic quantities is not a state function? O a. enthalpy O b. work O c. Gibbs free energy O d. entropy
For each of the following changes, do you expect the entropy to increase or decrease? (These questions do not require calculations.) a. Ammonia gas and hydrogen chloride gas react to deposit solid ammonium chloride on a surface b. Two aqueous solutions are combined to form a precipitate c. Methanol gas condenses to form liquid methanol d. Butane liquid reacts with oxygen gas to form carbon dioxide gas and gaseous water e. Liquid water freezes to form ice f. Solid lead melts g. A solid solute dissolves in a liquid solvent h. Liquid water boils Possible answers: 1. Entropy should increase (more positive) 2. Entropy should decrease (more negative) 3. The change in entropy cannot be determined from the information given
The following reaction is endothermic. 2NH3(g) → N2(g) + 3H2(g) This means the reaction A. will be spontaneous at high temperatures. B. will be spontaneous at low temperatures. C. is not spontaneous at any temperature. D. is spontaneous at all temperatures.
Which of the following exhibits a non-spontaneous?a. Rain falls from the sky.b. A plants 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
All of the following statements about entropy are true except for: 1 it is a measure of the energy dispersal 2. the natural tendency is for it to remain constant 3. it is not a state function under all conditions 4. its calculation is possible for isothermal processes A. 1, 2, 3 only B. 2 and 3 only C. 3 and 4 only D. 1 and 2 only
Which expression defines the change in free energy? a. ΔΗ+ ΤΔG c. ΔΗ-ΤAS b. ΔΗ + ΤAS d. AS-ΤΔΗ
Which species do you expect to have the highest molar entropy? a. CH2Cl2 (g) b. NH3 (g) c. N2O5 (s) d. N2H4 (l)
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.
4. Select all that is considered spontaneous a. Cleaning your room b. A piece of bread molding after being left out in the sun c. A bomb exploding d. Pushing a ball up a ramp e. Ice melting f. Frying an egg g. Putting together a puzzle