Chemistry (OER)
2nd Edition
ISBN: 9781947172616
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 16, Problem 65E
When ammonium chloride is added to water and stirred, it dissolves spontaneously and the resulting solution feels cold. Without doing any calculations, deduce the signs of △G, △H, and △S for this process, and justify your choices.
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Chapter 16 Solutions
Chemistry (OER)
Ch. 16 - What is a spontaneous reaction?Ch. 16 - What is a nonspontaneous reaction?Ch. 16 - Indicate whether the following processes are...Ch. 16 - A helium-filled balloon spontaneously deflates...Ch. 16 - Many plastic materials are organic polymers that...Ch. 16 - In Figure 16.8 all possible distributions and...Ch. 16 - In Figure 16.8 all of the possible distributions...Ch. 16 - How does the process described in the previous...Ch. 16 - Consider a system similar to the one in Figure...Ch. 16 - Consider the system shown in Figure 16.9. What is...
Ch. 16 - Consider the system shown in Figure 16.9. What is...Ch. 16 - Arrange the following sets of systems in order of...Ch. 16 - At room temperature, the entropy of the halogens...Ch. 16 - Consider two processes: sublimation of I2(s) and...Ch. 16 - Indicate which substance in the given pairs has...Ch. 16 - Predict the sign of the entropy change for the...Ch. 16 - Predict the sign of the entropy change for the...Ch. 16 - Write the balanced chemical equation for the...Ch. 16 - Write the balanced chemical equation for the...Ch. 16 - What is the difference between S, S , and S 298...Ch. 16 - Calculate S298 for the following changes. (a)...Ch. 16 - Determine the entropy change for the combustion of...Ch. 16 - Determine the entropy change for the combustion of...Ch. 16 - Thermite reactions have been used for welding...Ch. 16 - Using the relevant S 298 values listed in Appendix...Ch. 16 - From the following information, determine S298 for...Ch. 16 - By calculating Suniv, at each temperature,...Ch. 16 - Use the standard entropy data in Appendix G to...Ch. 16 - Use the standard entropy data in Appendix G to...Ch. 16 - What is the difference between G, G, and G 298 for...Ch. 16 - A reaction has H298=100 kj/mol and S298=250 J/mol ...Ch. 16 - Explain what happens as a reaction starts with G0...Ch. 16 - Use the standard free energy of formation data in...Ch. 16 - Use the standard free energy data in Appendix G to...Ch. 16 - Given: P4(s)+5O2(g)P4O10(s)G298=2697.0kJ/mol...Ch. 16 - Is the formation of ozone (O3(g)) from oxygen...Ch. 16 - Consider the decomposition of red mercury(II)...Ch. 16 - Among other things, an ideal fuel for the control...Ch. 16 - Calculate G for each of the following reactions...Ch. 16 - Calculate G for each of the following reactions...Ch. 16 - Calculate the equilibrium constant at 25 C for...Ch. 16 - Calculate the equilibrium constant at 25 C for...Ch. 16 - Calculate the equilibrium constant temperature...Ch. 16 - Calculate the equilibrium constant temperature...Ch. 16 - Consider the following reaction at 298 K:...Ch. 16 - Determine the normal boiling point (in kelvin) of...Ch. 16 - Under what conditions is N2O3(g)NO(g)+NO2(g)...Ch. 16 - At mom temperature, the equilibrium constant (Kw)...Ch. 16 - Hydrogen sulfide is a pollutant found in natural...Ch. 16 - Consider the decomposition of CaCO3(s) into CaO(s)...Ch. 16 - In the laboratory, hydrogen chloride (HCl(g)) and...Ch. 16 - Benzene can be prepared from acetylene....Ch. 16 - Carbon dioxide decomposes into CO and O2 at...Ch. 16 - Carbon tetrachloride, an important industrial...Ch. 16 - Acetic acid, CH3CO2H, can form a dimer,...Ch. 16 - Nitric acid, HNO3, can be prepared by the...Ch. 16 - Determine G for the following reactions. (a)...Ch. 16 - Given that the Gf for Pb2+(aq) and Cl-(aq) is...Ch. 16 - Determine the standard free energy change, Gf, for...Ch. 16 - Determine the standard enthalpy change, entropy...Ch. 16 - The evaporation of one mole of water at 298 K has...Ch. 16 - In glycolysis, the reaction of glucose (Glu) to...Ch. 16 - One of the important reactions in the biochemical...Ch. 16 - Without doing a numerical calculation, determine...Ch. 16 - When ammonium chloride is added to water and...Ch. 16 - An important source of copper is from the copper...Ch. 16 - What happens to G (becomes more negative or more...
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