CHEMISTRY >CUSTOM<
14th Edition
ISBN: 9781259137815
Author: Julia Burdge
Publisher: McGraw-Hill Education
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Chapter 18.5, Problem 2CP
At what temperature
a)
b)
c)
d)
e)
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Chapter 18 Solutions
CHEMISTRY >CUSTOM<
Ch. 18.1 - Practice Problem ATTEMPT
Determine the change in...Ch. 18.1 - Practice Problem BUILD To what fraction of its...Ch. 18.1 - Practice Problem CONCEPTUALIZE
Which equation is...Ch. 18.2 - Practice ProblemATTEMPT Calculate the standard...Ch. 18.2 - Practice Problem BUILD
In each of the following...Ch. 18.2 - Practice Problem CONCEPTUALIZE
For each reaction...Ch. 18.3 - Practice ProblemATTEMPT For each of the following...Ch. 18.3 - Practice Problem BUILD
Make a qualitative...Ch. 18.3 - Practice Problem CONCEPTUALIZE
Consider the...Ch. 18.3 - 18.3.1 For which of the following physical...
Ch. 18.3 - 18.3.2 For which of the following chemical...Ch. 18.3 - 18.3.3 Identify the correct balanced equation and...Ch. 18.4 - Practice Problem ATTEMPT For each of the...Ch. 18.4 - Practice Problem BUILD (a) Calculate Δ S univ and...Ch. 18.4 - Practice Problem CONCEPTUALIZE The following table...Ch. 18.4 - Using data from Appendix 2, calculate Δ S ° (in...Ch. 18.4 - 18.4.2 Using data from Appendix 2, calculate (in...Ch. 18.4 - The diagrams show a spontaneous chemical reaction....Ch. 18.4 - 18.4.4 The diagrams show a spontaneous chemical...Ch. 18.5 - Practice Problem ATTEMPT
A reaction will be...Ch. 18.5 - Practice Problem BUILD
Given that the reaction is...Ch. 18.5 - Practice ProblemCONCEPTUALIZE Which of the...Ch. 18.5 - A reaction for which Δ H and Δ S are both negative...Ch. 18.5 - At what temperature ( in ºC ) does a reaction go...Ch. 18.5 - 18.5.3 Using data from Appendix 2, calculate G°...Ch. 18.5 - 18.5.4 Calculate for the sublimation of iodine in...Ch. 18.6 - Practice Problem ATTEMPT
Calculate the standard...Ch. 18.6 - Practice problemBUILD For each reaction, determine...Ch. 18.6 - Prob. 1PPCCh. 18.6 - 18.6.1 For the reaction:
Ch. 18.6 - Consider the reaction: X ( g ) + Y(g) ⇄ Z( g ) for...Ch. 18.6 - The Δ G° for the reaction: N 2 ( g ) + 3H 2 (g) ⇄...Ch. 18.6 - 18.6.4 The for iron(III) hydroxide . For the...Ch. 18.7 - Practice Problem ATTEMPT
The molar heats of fusion...Ch. 18.7 - Practice Problem CONCEPTUALIZE
Explain why. in...Ch. 18.8 - Practice ProblemATTEMPT Δ G ° for the reaction: H...Ch. 18.8 - Practice ProblemBUILD What is the minimum partial...Ch. 18.8 - Practice Problem CONCEPTUALIZE Consider the...Ch. 18.9 - Practice Problem ATTEMPT Using data from Appendix...Ch. 18.9 - Practice ProblemBUILD K f for the complex ion Ag (...Ch. 18.9 - Practice Problem CONCEPTUALIZE Which of the...Ch. 18.10 - Practice ProblemATTEMPT Calculate G for the...Ch. 18.10 - Practice ProblemBUILD Ksp for Co(OH)2 at...Ch. 18.10 - Prob. 1PPCCh. 18 - 18.1
Which of the following must be negative for a...Ch. 18 - Δ G for a reaction is always negative when (a) Δ G...Ch. 18 - 18.3
The diagram shown here depicts a system at...Ch. 18 - The reaction shown here has Δ G º = -1 .83 kJ/mol...Ch. 18 - 18.1 Explain what is meant by a spontaneous...Ch. 18 - Prob. 2QPCh. 18 - Prob. 3QPCh. 18 - Describe what is meant by the term entropy. What...Ch. 18 - Prob. 5QPCh. 18 - Prob. 6QPCh. 18 - Prob. 7QPCh. 18 - Prob. 8QPCh. 18 - How does the entropy of a system change for each...Ch. 18 - Prob. 10QPCh. 18 - Prob. 11QPCh. 18 - Prob. 12QPCh. 18 - Prob. 13QPCh. 18 - Using the data in Appendix 2, calculate the...Ch. 18 - 18.15 Using the data in Appendix 2, calculate the...Ch. 18 - Prob. 16QPCh. 18 - Prob. 17QPCh. 18 - Prob. 18QPCh. 18 - 18.19 State the third law of thermodynamics in...Ch. 18 - Calculate Δ S surr for each of the reactions in...Ch. 18 - Calculate Δ S surr for each of the reactions in...Ch. 18 - Using data from Appendix 2, calculate Δ S rxn º...Ch. 18 - 18.23 Using data from Appendix 2, calculate for...Ch. 18 - Prob. 24QPCh. 18 - Why is it more convenient to predict the direction...Ch. 18 - What is the significance of the sign of Δ G sys ?Ch. 18 - From the following combinations of Δ H and Δ S ,...Ch. 18 - Prob. 28QPCh. 18 - Prob. 29QPCh. 18 - From the values of Δ H and Δ S , predict which of...Ch. 18 - Find the temperatures at which reactions with the...Ch. 18 - The molar heats of fusion and vaporization of...Ch. 18 - 18.33 The molar heats of fusion and vaporization...Ch. 18 - Prob. 34QPCh. 18 - Prob. 35QPCh. 18 - Prob. 36QPCh. 18 - Prob. 37QPCh. 18 - Prob. 38QPCh. 18 - Explain why Equation 18.14 is of great importance...Ch. 18 - Prob. 40QPCh. 18 - Prob. 41QPCh. 18 - Prob. 42QPCh. 18 - 18.43 Consider the following reaction at...Ch. 18 - Prob. 44QPCh. 18 - 18.45
(a)
Calculate and for the following...Ch. 18 - Prob. 46QPCh. 18 - Consider the decomposition of calcium carbonate:...Ch. 18 - Prob. 48QPCh. 18 - 18.49 At for the process:
is 8.6 kJ/mol....Ch. 18 - Prob. 50QPCh. 18 - What is a coupled reaction? What is its importance...Ch. 18 - What is the role of ATP in biological reactions?Ch. 18 - Prob. 53QPCh. 18 - 18.54 In the metabolism of glucose, the first step...Ch. 18 - Predict the signs of Δ H , Δ S , and Δ G of the...Ch. 18 - Prob. 56APCh. 18 - Prob. 57APCh. 18 - Prob. 58APCh. 18 - Prob. 59APCh. 18 - Prob. 60APCh. 18 - Ammonium nitrate ( NH 4 NO 3 ) dissolves...Ch. 18 - 18.62 Calculate the equilibrium pressure of due...Ch. 18 - Prob. 63APCh. 18 - Referring to Problem 18.63, explain why the ratio...Ch. 18 - 18.65 Which of the following are not state...Ch. 18 - 18.66 For reactions carried out under...Ch. 18 - Prob. 67APCh. 18 - Prob. 68APCh. 18 - A student looked up the Δ G f o , Δ H f o , and Δ...Ch. 18 - Consider the following Brønsted acid-base reaction...Ch. 18 - 18.71 At o K, the entropy of carbon monoxide...Ch. 18 - Prob. 72APCh. 18 - Consider the thermal decomposition of CaCO 3 :...Ch. 18 - Prob. 74QPCh. 18 - Prob. 75QPCh. 18 - Prob. 76QPCh. 18 - Prob. 77APCh. 18 - Prob. 78APCh. 18 - Prob. 79APCh. 18 - Prob. 80APCh. 18 - Prob. 81APCh. 18 - Prob. 82APCh. 18 - 18.83 Comment on the statement: “Just talking...Ch. 18 - Prob. 84APCh. 18 - Consider the reaction: N 2 ( g ) + O 2 ( g ) ⇄ 2...Ch. 18 - Prob. 86APCh. 18 - Consider the decomposition of magnesium carbonate:...Ch. 18 - Prob. 88APCh. 18 - Prob. 89APCh. 18 - 18.90 The rate constant for the elementary...Ch. 18 - A 74.6-g ice cube floats in the Arctic Sea. The...Ch. 18 - 18.92 Which of the following is not accompanied by...Ch. 18 - Prob. 93APCh. 18 - Give a detailed example of each of the following,...Ch. 18 - Prob. 95QPCh. 18 - 18.96 The standard enthalpy of formation and the...Ch. 18 - Prob. 97QPCh. 18 - Prob. 98QPCh. 18 - The following reaction was described as the cause...Ch. 18 - Comment on the feasibility of extracting copper...Ch. 18 - 18.101 One of the steps in the extraction of iron...Ch. 18 - Prob. 102APCh. 18 - Prob. 103APCh. 18 - Prob. 104APCh. 18 - 18.105 The enthalpy change in the denaturation of...Ch. 18 - Prob. 106APCh. 18 - Prob. 107APCh. 18 - Prob. 108APCh. 18 - Prob. 109APCh. 18 - Prob. 110APCh. 18 - 18.111 Carbon monoxide and nitric oxide are...Ch. 18 - Prob. 112APCh. 18 - Prob. 113APCh. 18 - 18.114 Many hydrocarbons exist as structural...Ch. 18 - Physical and Biological Sciences
In chemistry, the...Ch. 18 - Physical and Biological Sciences
In chemistry, the...Ch. 18 - Prob. 3SEPPCh. 18 - Physical and Biological Sciences
In chemistry, the...
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- Enthalpy changes often help predict whether or not a process will be spontaneous. What type of reaction is more likely to be spontaneous: an exothermic or an endothermic one? Provide two examples that support your assertion and one counterexample.arrow_forwardSolid NH4NO3 is placed in a beaker containing water at 25 C. When the solid has completely dissolved, the temperature of the solution is 23.5 C. (a) Was the process exothermic or endothermic? (b) Was the process spontaneous? (c) Did the entropy of the system increase? (d) Did the entropy of the universe increase?arrow_forwardThe combustion of acetylene, C2H2, is a spontaneous reaction given by the equation 2C2H2(g)+5O2(g)4CO2(g)+2H2O(l) As expected for a combustion, the reaction is exothermic. What is the sign of H? What do you expect for the sign of S? Explain the spontaneity of the reaction in terms of the enthalpy and entropy changes.arrow_forward
- Indicate whether the following processes are spontaneous or nonspontaneous. (a) Liquid water freezing at a temperature below its freezing point (b) Liquid water freezing at a temperature above its freezing point (c) The combustion of gasoline (d) A ball thrown into the air (e) A raindrop falling to the ground (f) Iron rusting in a moist atmospherearrow_forwardGiven the values of H and S, which of the following changes will be spontaneous at constant T and p? a. H = + 25 kJ, S = + 5.0 J/K, T = 300. K b. H = + 25 kJ, S = + 100. J/K, T = 300. K c. H = 10. kJ, S = + 5.0 J/K, T= 298 K d. H = 10.kJ, S =40.J/K, T = 200.Karrow_forwardHow does the second law of thermodynamics explain a spontaneous change in a system that becomes more ordered when that process is exothermic?arrow_forward
- For each of the following processes, identify the systemand the surroundings. Identify those processes that arespontaneous. For each spontaneous process, identify theconstraint that has been removed to enable the process to occur: Ammonium nitrate dissolves in water. Hydrogen and oxygen explode in a closed bomb. A rubber band is rapidly extended by a hangingweight. The gas in a chamber is slowly compressed by aweighted piston. A glass shatters on the floor.arrow_forwardIdentify each of the processes listed as spontaneous or nons-pontaneous. For each nonspontaneous process, describe the corresponding spontaneous process in the opposite direction. (a) A group of cheerleaders builds a human pyramid. (b) Table salt dissolves in water. (c) A cup of cold coffee in a room becomes steaming hot. (d) Water molecules in the air are converted to hydrogen and oxygen gases. (e) A person peels an orange, and you smell it from across the room.arrow_forwardAt what temperatures will the following processes be spontaneous? a. H = 18 kJ and S = 60. J/K b. H = +18 kJ and S = + 60. J/K c. H = +18 kJ and S = 60. J/K d. H = 18 kJ and S = +60. J/Karrow_forward
- Which contains greater entropy, a quantity of frozen benzene or the same quantity of liquid benzene at the same temperature? Explain in terms of the dispersal of energy in the substance.arrow_forwardFor the reaction at 298 K, 2NO2(g)N2O4(g) the values of H and S are 58.03 kJ and 176.6 J/K, respectively. What is the value of G at 298 K? Assuming that H and S do not depend on temperature, at what temperature is G = 0? Is G negative above or below this temperature?arrow_forwardWhat is the second law of thermodynamics? For any process, there are four possible sign combinations for Ssys and Ssurr. Which sign combination(s) always give a spontaneous process? Which sign combination(s) always give a non-spontaneous process? Which sign combination(s) may or may not give a spontaneous process?arrow_forward
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