Questions for Video 1:Introduction to entropy..a systemordered"Move pessible StatesdisorderedMoreEntopyEntropymessy 7 entropyKhan Academy1. Which room has a higher Entropy : clean room or messy room?2. Which of these has a higher Entropy: sun or moon?3. State the second Law of Thermodynamics.

Entropy is degree of randomness or disorderness. More is the disordered is the system, more is the…

a system "ordered "disordored Move possible States More Entopy Entropy Khan Academy 1. Which room has a higher Entropy : clean room or messy room? 2. Which of these has a higher Entropy: sun or moon? 3. State the second Law of Thermodynamics.

a system "ordered "disordored Move possible States More Entopy Entropy Khan Academy 1. Which room has a higher Entropy : clean room or messy room? 2. Which of these has a higher Entropy: sun or moon? 3. State the second Law of Thermodynamics.

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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Which substance has the higher entropy? a. a sample of pure silicon (to be used in a computer chip) or a piece of silicon containing a trace of another element such as boron or phosphorus a piece of silicon containing a trace of another element such as boron or phosphorus a sample of pure silicon b. CO2(g) at 0 °C or CO2 (g) at -50 °C O CO2 (g) at –50 °C O CO2 (g) at 0 °C c. I2 (s) or I2 (g) both at room temperature OL (g) OL (s) d. one mole of CO2(g) at 1 bar pressure or one mole of CO2(g) at 0.01 bar pressure (both at 298 K) one mole of CO2(g) at 0.01 bar pressure one mole of CO2(g) at 1 bar pressure
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.
Please answer question A and B.
Which has lower entropy? CO2(g) or CH4(g)?
is gas C. solid 3. Which of the following is a A. ripening of fruits B. liquid nonspontaneous process? C. coffee getting colder B. a ball rolling upwards D. a drop of ink dispersing in water 4. What happens to entropy when solid carbon dioxide (dry ice) sublimes? A. It decreases B. it increases C. It stays the same D. cannot be determined 5. What is the value for standard temperature and pressure or STP? A. 25°C and 10 atm B. 25°C and 1 atm C. 100°C and 1 atm D. 32°C and 10 atm 6. Who is the proponent of the Gibbs free energy? A. William Friedrich B. Guglielmo Marconi C. William Gibbs D. Janno Gibbs 7. When AG H2(g) = 130.6, 12 (s) = 116.7 and Hl (g) = 206.3 A. AS = +165.3 J/K B. AS = -165.3 J/K C. AS = -41 J/K D. AS = +453.6 J/K 9. What value of Gibbs free energy can we safely predict that the reaction is spontaneous at all temperatures? A. a negative value C. a positive value at a low temperature B. a positive value D. a positive value at a high temperature 10. What will be the…
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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