14. Which of the following is true about the first law of thermodynamics? A. energy can neither be created nor destroyed B. energy may be transformed from one form to another C. energy can be transferred back and forth between the system and surrounding D. all of the above 15. To speed up a reaction with which one reactant is a solid and one is a liquid, which of the following will be the most effective strategy? A. Increase volume liquid reactant B. Increase amount of solid reactant 16. Which of the following is true following the Law of Conservation of Energy? A.) AEsys = AEsurr 17. What is the symbol if heat is added to the system? A.) -q B.) +q 18. What property denotes the heat change at constant pressure? A.) Enthalpy C.) Pulverize the solid reactant D.) All of the above will be equally effective B.) AEsys = - AEsurr C.) AEsys-AEsurr = 0 D.) AEsys-AEsurr = 1 %3D C.) -w D.) +w B.) Entropy C.) Work D.) Thermochemistry

14. Which of the following is true about the first law of thermodynamics? A. energy can neither be created nor destroyed B. energy may be transformed from one form to another C. energy can be transferred back and forth between the system and surrounding D. all of the above 15. To speed up a reaction with which one reactant is a solid and one is a liquid, which of the following will be the most effective strategy? A. Increase volume liquid reactant B. Increase amount of solid reactant 16. Which of the following is true following the Law of Conservation of Energy? A.) AEsys = AEsurr 17. What is the symbol if heat is added to the system? A.) -q B.) +q 18. What property denotes the heat change at constant pressure? A.) Enthalpy C.) Pulverize the solid reactant D.) All of the above will be equally effective B.) AEsys = - AEsurr C.) AEsys-AEsurr = 0 D.) AEsys-AEsurr = 1 %3D C.) -w D.) +w B.) Entropy C.) Work D.) Thermochemistry

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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elect the ???? description about the second law of thermodynamics. * A. Measure of the randomness or disorder of the system B. Study of energy change of chemical or physical processes C. Matter and energy can be transferred between system and surrounding D. Energy can be converted from one to another but cannot be created or destroyed
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…
19. Predict the CORRECT process for the following statement : During this process the potential energy of reactants is higher compared to the potential energy of products. * O A. Heating B. Cooling C. Exothermic D Endothermic 20. Choose the CORRECT thermochemical equation for enthalpy of foluminum oxide. Al:O.
is used to understand the concept of energy conservation. O a. First Law of Thermodynamics O b. Second Law of thermodynamics O c. Zeroth Law O d. None of the above
TRUE OR FALSE ONLY NUMBER 8 TO 10 ONLY
A spontaneous reaction always has: A. a positive enthalpy change and a negative entropy change. B. a positive Gibbs free energy change. C. a negative Gibbs free energy change. D. a standard enthalpy of formation equal to zero for one of the reactants. E. a standard free energy of formation equal to zero for one of the reactants.
Which statement is correct? a. Hot metal and cool water will both will both be at the same temperature at the final conditions. b. Metal at room temperature will become hot when placed in boiling water. c. Warm water will warm up when a metal at room temperature is placed in it. d. Cool water will warm up when a hot metal is placed in it. e. Hot metal will cool down when placed in cool water.
Which of the following best defines molar heat capacity. a. The quantity of heat required to raise the temperature of 1 mole of a substance by 1K b. The quantity of heat required to lower the temperature of 1 liter of a substance by 1°C c. The quantity of heat required to raise the temperature of 1 gram of a substance by 1°C d. The quantity of heat required to raise the temperature of 1 gram of a substance by 1°F
Gibbs free energy is the sum of enthalpy change and the product of temperature and entropy. a. True b. False
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.
6. What is the energy required to raise the temperature of 22.0 g of water from 15.0 °C to 20.0 °C? a. 110J b. 18.4 J c. 26.3 J d. 460 J
Read the descriptions of physical or chemical changes in the table below. Then decide whether the change will be spontaneous, if you can. Change Two liquids mix, neither absorbing nor releasing heat. During an endothermic chemical reaction, a gas is consumed and a liquid produced. An endothermic chemical reaction between two liquids results in gaseous products. Is this change spontaneous? Yes. O No. O Can't decide with information given. Yes. O No. O Can't decide with information given. O Yes. O No. O Can't decide with information given.