Physical Chemistry
Physical Chemistry
2nd Edition
ISBN: 9781133958437
Author: Ball, David W. (david Warren), BAER, Tomas
Publisher: Wadsworth Cengage Learning,
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Chapter 5, Problem 5.1E

Can a battery that has a voltage be considered a system at equilibrium? How about a dead battery? Justify each conclusion.

Expert Solution & Answer
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Interpretation Introduction

Interpretation:

The validation of the given statement that a battery that has voltage can be considered as a system at equilibrium is to be stated. The state of equilibrium for a dead battery is to be predicted. The justification for each conclusion is to be stated.

Concept introduction:

The static equilibrium is defined as a process in which the rate of forward reaction or the rate of backward reaction is zero. On the other hand, in dynamic equilibrium, the rates of forward and backward reaction are equal.

Answer to Problem 5.1E

A battery that has a voltage is not considered as a system at equilibrium because the electrons move from negative terminal to positive terminal. On the other hand, a dead battery is at equilibrium because the electrons do not flow from negative terminal to positive terminal.

Explanation of Solution

The voltage in battery is developed when the flow of electrons takes place from negative electrode to positive electrode. The flow of electrons indicates that a battery that has a voltage is not at equilibrium. However, the voltage in a dead battery is zero. The flow of electrons does not take place from negative to positive electrode in a dead battery. Therefore, a dead battery is at equilibrium.

Hence, a battery that has a voltage is not at equilibrium whereas a dead battery is at equilibrium.

Conclusion

A battery that has a voltage is not considered as a system at equilibrium because the electrons move from negative terminal to positive terminal. On the other hand, a dead battery is at equilibrium because the electrons do not flow from negative terminal to positive terminal.

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Chapter 5 Solutions

Physical Chemistry

Ch. 5 - 5.11. Determine the numerical value of Q for the...Ch. 5 - 5.12. True or false: If all the partial pressures...Ch. 5 - For the reaction 2SO3(g)2SO2(g)+O2(g) when 2mol of...Ch. 5 - 5.14. Determine and for the following reaction at...Ch. 5 - 5.15. Consider the reaction If the partial...Ch. 5 - 5.16. In atmospheric chemistry, the following...Ch. 5 - Prob. 5.17ECh. 5 - 5.18. Hydrogen cyanide can isomerize to hydrogen...Ch. 5 - 5.19. Assume that a reaction exists such that...Ch. 5 - Prob. 5.20ECh. 5 - 5.21. Show that if the coefficients of a balanced...Ch. 5 - 5.22. True or false: If for a gas-phase reaction,...Ch. 5 - 5.23. The balanced chemical reaction for the...Ch. 5 - The answers in exercise 5.23 should show that...Ch. 5 - At a high enough temperature, the equilibrium...Ch. 5 - Prob. 5.26ECh. 5 - 5.27. Nitrogen dioxide,, dimerizes easily to form...Ch. 5 - 5.28. Another nitrogen-oxygen reaction of some...Ch. 5 - Prob. 5.29ECh. 5 - Prob. 5.30ECh. 5 - Prob. 5.31ECh. 5 - 5.32. For the reaction . (a) Using in Appendix...Ch. 5 - 5.33. Use the data in Appendix to calculate ...Ch. 5 - 5.34. The of diamond, a crystalline form of...Ch. 5 - 5.35. The densities of graphite and diamond are ...Ch. 5 - Buckminsterfullerene, C60, is a spherical molecule...Ch. 5 - Prob. 5.37ECh. 5 - At what pressure does H2O have an activity of...Ch. 5 - The bisulfate or hydrogen sulfate anion, HSO4, is...Ch. 5 - Prob. 5.40ECh. 5 - Write the equilibrium constant expression for each...Ch. 5 - Prob. 5.42ECh. 5 - For the given chemical equilibrium, these data are...Ch. 5 - Biological standard states include specifying a...Ch. 5 - a At 25.0C, Kw for the autoionization of water is...Ch. 5 - 5.46. For a reaction whose standard enthalpy...Ch. 5 - 5.47. For the reaction and . Estimate for this...Ch. 5 - 5.48. The isotope exchange reaction has an...Ch. 5 - 5.49. Consider the following equilibrium: What...Ch. 5 - 5.50. For the equilibrium Equilibrium partial...Ch. 5 - The decomposition of NaHCO3, used in kitchens to...Ch. 5 - 5.52. For the equilibrium at,. In a flask, of...Ch. 5 - Prob. 5.53ECh. 5 - 5.54. For the reaction The equilibrium...Ch. 5 - Prob. 5.55ECh. 5 - 5.56. Of the amino acids listed in Table , which...Ch. 5 - 5.57. Determine the concentration of the three...Ch. 5 - 5.58. The formation of zwitterionic glycine, ,...Ch. 5 - 5.59. Monosodium glutamate, or MSG, is the sodium...Ch. 5 - Prob. 5.60ECh. 5 - Consider the balanced chemical reaction...Ch. 5 - For the gas-phase reaction 2H2+O22H2O rxnG is...Ch. 5 - Prob. 5.63ECh. 5 - Prob. 5.64E
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