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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TOPIC: Chemical Thermodynamics 1. The totality of all things is referred to as the _____(I). A part of this that one wants to focus on is called a _____(II). The latter is separated from its surroundings by a _____(III). Choices for all the blanks: a. surroundingsb. systemc. universed. boundary
4. When can a process be considered endothermic or exothermic?5. Explain why water is considered an adherent liquid.6. What is thermodynamics and on what principles is it based?7. What does the zero law of thermodynamics say?
5. The rate of an endothermic reaction and an exothermic reaction when the temperature is increasedA. If the first quantity is less than the second quantityB. If the first quantity is greater than second quantityC. If the two quantities are equalD. If the two quantities cannot be compared
4. Select the INCORRECT description about internal energy. * 1 poin O A. Absolute internal energy can be measured O B. Internal energy is the total energy of the system. O C. Internal energy of a system can be changed as work or heat. D. Internal energy is the sum of all kinetic and potential energies of all components in the system. 1 poim 5. Select the TRUE statement regarding a spontaneous reaction. A. Entropy equals to zero. B. Occurs at vacuum condition.
In the past, scientists were surprised that an endothermic process like the one in this lab, could be spontaneous. Which statement correctly describes why it seems like an endothermic process should not be spontaneous? Group of answer choices All endothermic processes create order in both the system and surroundings. Endothermic processes cause heat to flow from a cold object to a hot object. A process that spontaneously takes in energy seems to be analogous to a rock rolling up a hill. Endothermic processes become so cold that molecular motion stops.
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…
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