MOLECULAR NATURE OF MATTER 7/E LL W/AC
7th Edition
ISBN: 9781119664796
Author: JESPERSEN
Publisher: WILEY
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Chapter 18, Problem 108RQ
The standard heat of formation of ethylene,
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Chapter 18 Solutions
MOLECULAR NATURE OF MATTER 7/E LL W/AC
Ch. 18 - Molecules of an ideal gas have no intermolecular...Ch. 18 - If a gas is compressed under adiabatic conditions...Ch. 18 - Calculate the difference, in kilojoules, between...Ch. 18 - The reaction CaO(s)+2HCl(g)CaCl2(s)+H2O(g) has...Ch. 18 - Are the following processes spontaneous? (a) Ice...Ch. 18 - The following processes are nor spontaneous as...Ch. 18 - Would you expect the to be positive or negative...Ch. 18 - Predict the sign of the entropy change for (a) the...Ch. 18 - Predict the sing of S for the following reactions:...Ch. 18 - Would you expect the following reactions to be...
Ch. 18 - What change in temperature would make the process...Ch. 18 - Calculate SfforNH3(g). (Hint: Write the equation...Ch. 18 - Calculate the standard entropy change, S,inJK-1...Ch. 18 - Prob. 14PECh. 18 - Use the data in Table 6.2 and Table 18.1 to...Ch. 18 - Calculate for the reaction of iron(III) oxide...Ch. 18 - Calculate Greaction in kilojoules for the...Ch. 18 - Calculate the maximum work that could be obtained...Ch. 18 - Calculate the maximum work that could be obtained...Ch. 18 - The heat of vaporization of ammonia is and the...Ch. 18 - The heat of vaporization of mercury is 60.7...Ch. 18 - Use the data in Table 18.2 to determine whether...Ch. 18 - Use the data in Table 18.2 to determine whether we...Ch. 18 - In Examples 18.3 and 18.4 we computed SandH for...Ch. 18 - Use the data in Table 18.2 to determine for the...Ch. 18 - Calculate for the reaction described in the...Ch. 18 - In which direction will the reaction described in...Ch. 18 - The reaction...Ch. 18 - The reaction...Ch. 18 - Determine the heat of formation of gaseous...Ch. 18 - Determine the heat of formation of gaseous...Ch. 18 - First Law of Thermodynamics
18.1 What is the...Ch. 18 - First Law of Thermodynamics
18.2 State the first...Ch. 18 - First Law of Thermodynamics
18.3 How is a change...Ch. 18 - First Law of Thermodynamics
18.4 What is the...Ch. 18 - First Law of Thermodynamics Which quantities in...Ch. 18 - First Law of Thermodynamics Which thermodynamic...Ch. 18 - Second Law of Thermodynamics
18.7 What are the...Ch. 18 - First Law of Thermodynamics If there is a decrease...Ch. 18 - First Law of Thermodynamics Which of the following...Ch. 18 - Spontaneous Change What is a spontaneous change?...Ch. 18 - Spontaneous Change List five changes that you have...Ch. 18 - Spontaneous Change
18.12 Which of the items that...Ch. 18 - Spontaneous Change At constant pressure, what role...Ch. 18 - Spontaneous Change How do the probabilities of the...Ch. 18 - Entropy An instant cold pack purchased in a...Ch. 18 - Entropy What is entropy?Ch. 18 - Entropy How is the entropy of a substance affected...Ch. 18 - Entropy
18.18 Will the entropy change for each of...Ch. 18 - Entropy On the basis of our definition of entropy,...Ch. 18 - Second Law of Thermodynamics State the second law...Ch. 18 - Second Law of Thermodynamics How can a process...Ch. 18 - Second Law of Thermodynamics Explain the terms...Ch. 18 - Second Law of Thermodynamics Explain how the...Ch. 18 - Second Law of Thermodynamics
18.24 What is the...Ch. 18 - Second Law of Thermodynamics Define Gibbs free...Ch. 18 - Second Law of Thermodynamics
18.26 In terms of the...Ch. 18 - Second Law of Thermodynamics Under what...Ch. 18 - Third Law of Thermodynamics State the third law of...Ch. 18 - Third Law of Thermodynamics Explain why the units...Ch. 18 - Third Law of Thermodynamics Explain why the values...Ch. 18 - Third Law of Thermodynamics Would you expect the...Ch. 18 - Third Law of Thermodynamics Why does entropy...Ch. 18 - Third Law of Thermodynamics Does glass have S = 0...Ch. 18 - Standard Free Energy Change, G What is the...Ch. 18 - Standard Free Energy Change, G Why can G be...Ch. 18 - Maximum Work and G How is free energy related to...Ch. 18 - Maximum Work and
18.37 What is a...Ch. 18 - Maximum Work and G How is the rate at which energy...Ch. 18 - Maximum Work and
18.39 When glucose is oxidized...Ch. 18 - Maximum Work and G Why are real, observable...Ch. 18 - Free Energy and Equilibrium
18.41 In what way is...Ch. 18 - Free Energy and Equilibrium How can boiling points...Ch. 18 - Free Energy and Equilibrium Considering the fact...Ch. 18 - Free Energy and Equilibrium When a warm object is...Ch. 18 - Free Energy and Equilibrium Sketch the shape of...Ch. 18 - Free Energy and Equilibrium Many reactions that...Ch. 18 - Equilibrium Constants and
18.47 Suppose a...Ch. 18 - Equilibrium Constants and G Write the equation...Ch. 18 - Equilibrium Constants and G How is the equilibrium...Ch. 18 - Equilibrium Constants and
18.50 What is the value...Ch. 18 - Equilibrium Constants and
18.51 How does the...Ch. 18 - Bond Energies Define the term atomization enerey.Ch. 18 - Bond Energies Why are the heats of formation of...Ch. 18 - Bond Energies The gaseous C2 molecule has a bond...Ch. 18 - First Law of Thermodynamics
18.55 A certain system...Ch. 18 - First Law of Thermodynamics The value of E for a...Ch. 18 - 18.57 Suppose that you were pumping an automobile...Ch. 18 - 18.58 Consider the reaction between aqueous...Ch. 18 - Calculate H and E for the following reactions at...Ch. 18 - Calculate H and E for the following reactions at...Ch. 18 - The reaction 2N2O(g)2N2(g)+O2(g) has H=-163.14kJ....Ch. 18 - 18.62 A 10.0 L vessel at contains butane, , at a...Ch. 18 - Spontaneous Change Predict the sign of S for the...Ch. 18 - Spontaneous Change
18.64 Predict the sign of for...Ch. 18 - 18.65 Use the data from Table 6.2 to calculate ...Ch. 18 - Use the data from Table 6.2 to calculate H for the...Ch. 18 - Entropy There are two chemical systems, A and B,...Ch. 18 - Entropy
18.68 A chemical system has three panicles...Ch. 18 - Which system has a higher entropy? Explain your...Ch. 18 - Which system has a higher entropy?Ch. 18 - What factors must you consider to determine the...Ch. 18 - 18.72 What factors must you consider to determine...Ch. 18 - 18.73 Predict the algebraic sign of the entropy...Ch. 18 - 18.74 Predict the algebraic sign of the entropy...Ch. 18 - Second Law of Thermodynamics Under what conditions...Ch. 18 - Second Law of Thermodynamics
18.76 Under what...Ch. 18 - Third Law of Thermodynamics Calculate S for the...Ch. 18 - Third Law of Thermodynamics
18.78 Calculate for...Ch. 18 - Calculate Sfo for these compounds in J mol-1K-1....Ch. 18 - Calculate Sfo for these compounds in J mol-1K-1....Ch. 18 - Nitrogen dioxide, NO2, an air pollutant, dissolves...Ch. 18 - Good wine will turn to vinegar if it is left...Ch. 18 - Standard Free Energy Change, G Phosgene, COCl2,...Ch. 18 - Standard Free Energy Change, G Aluminum oxidizes...Ch. 18 - 18.85 Compute in kJ for the following reactions,...Ch. 18 - Prob. 86RQCh. 18 - Given the following,...Ch. 18 - *18.88 Given the following reactions and their ...Ch. 18 - Maximum Work and G Gasohol is a mixture of...Ch. 18 - Maximum Work and
18.90 What is the maximum amount...Ch. 18 - Free Energy and Equilibrium
18.91 Chloroform,...Ch. 18 - For the melting of aluminum,...Ch. 18 - Isooctane, a minor constituent of gasoline, has a...Ch. 18 - Acetone (nail polish remover) has a boiling point...Ch. 18 - 18.95 Determine whether the following reaction...Ch. 18 - Which of the following reactions (equations...Ch. 18 - Equilibrium Constants and G Calculate the value of...Ch. 18 - Equilibrium Constants and
18.98 Calculate the...Ch. 18 - 18.99 The reaction . A 1.00 L reaction vessel at ...Ch. 18 - The reaction...Ch. 18 - A reaction that can convert coal to methane (the...Ch. 18 - 18.102 One of the important reactions in living...Ch. 18 - What is the value of the equilibrium constant for...Ch. 18 - Methanol, a potential replacement for gasoline as...Ch. 18 - Bond Energies
18.105 Use the data in Table 18.4 to...Ch. 18 - 18.106 Approximately how much energy would be...Ch. 18 - 18.107 The standard heat of formation of ethanol...Ch. 18 - The standard heat of formation of ethylene,...Ch. 18 - Carbon disulfide, CS2, has the Lewis structure ,...Ch. 18 - Gaseous hydrogen sulfide, H2S,hasHf=20.15kJmol-1....Ch. 18 - 18.111 For . Use the data in Table 18.3 to...Ch. 18 - 18.112 Use the results of the preceding problem...Ch. 18 - Use the data in Tables 18.3 and 18.4 to estimate...Ch. 18 - What would be the approximate heat of formation of...Ch. 18 - *18.115 Which substance should have the more...Ch. 18 - Would you expect the value of Hf for benzene,...Ch. 18 - 18.117 Look at Table C.2 in Appendix C. Some of...Ch. 18 - Calculate the G for the dissolution of calcium...Ch. 18 - 18.119 If pressure is expressed in atmospheres and...Ch. 18 - 18.120 Calculate the work, in joules, done by a...Ch. 18 - When an ideal gas expands at a constant...Ch. 18 - When a real gas expands at a constant temperature,...Ch. 18 - 18.123 An ideal gas in a cylinder fitted with a...Ch. 18 - A cylinder fitted with a piston contains 5.00 L of...Ch. 18 - The experiment described in Exercise 18.124 is...Ch. 18 - When potassium iodide dissolves in water, the...Ch. 18 - The enthalpy of combustion Hcombustiono, of oxalic...Ch. 18 - Many biochemical reactions have positive values...Ch. 18 - *18.129 The reaction
has . Determine the value of...Ch. 18 - At 1500C,Kc=5.67 for the reaction...Ch. 18 - 18.131 Given the following reactions and their...Ch. 18 - *18.132 At room temperature , the gas ClNO is...Ch. 18 - *18.133 The reaction
has are placed in a 2.00 L...Ch. 18 - Use the data in Table 18.3 to calculate the bond...Ch. 18 - 18.135 The heat of vaporization of carbon...Ch. 18 - At 25C, 0.0560molO2and0.020molN2O were placed in a...Ch. 18 - For the substance SO2F2(g),Hfo=-858kJmol-1. The...Ch. 18 - *18.138 Ethyl alcohol, , has been suggested as an...Ch. 18 - When solutions of sodium hydroxide are used to...Ch. 18 - Prob. 140RQCh. 18 - A certain weak acid has a pKa of 5.83. When 100.0...Ch. 18 - The average CH bond energy calculated using the...Ch. 18 - 18.144 If a catalyst were able to affect the...Ch. 18 - At the beginning of this chapter we noted that the...
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- The thermochemical equation for the burning of methane, the main component of natural gas, is CH4(g)+2O2(g)CO2(g)+2H2O(l)H=890kJ (a) Is this reaction endothermic or exothermic? (b) What quantities of reactants and products are assumed if H = 890 kJ? (c) What is the enthalpy change when 1.00 g methane burns in an excess of oxygen?arrow_forwardThe enthalpy change for the following reaction is 393.5 kJ. C(s,graphite)+O2(g)CO2(g) (a) Is energy released from or absorbed by the system in this reaction? (b) What quantities of reactants and products are assumed? (c) Predict the enthalpy change observed when 3.00 g carbon burns in an excess of oxygen.arrow_forwardWhat mass of acetylene, C2H2(g), must be burned to produce 3420 kJ of heat, given that its enthalpy of combustion is 1301 kJ/mol? Compare this with the answer to Exercise 5.91 and determine which substance produces more heat per gram.arrow_forward
- 9.41 Under what conditions does the enthalpy change equal the heat of a process?arrow_forwardA 0.470-g sample of magnesium reacts with 200 g dilute HCl in a coffee-cup calorimeter to form MgCl2(aq) and H2(g). The temperature increases by 10.9 C as the magnesium reacts. Assume that the mixture has the same specific heat as water and a mass of 200 g. (a) Calculate the enthalpy change for the reaction. Is the process exothermic or endothermic? (b) Write the chemical equation and evaluate H.arrow_forwardHow much heat is produced by combustion of 125 g of methanol under standard state conditions?arrow_forward
- In a coffee-cup calorimeter, 150.0 mL of 0.50 M HCI is added to 50.0 mL of 1.00 M NaOH to make 200.0 g solution at an initial temperature of 48.2C. If the enthalpy of neutralization for the reaction between a strong acid and a strong base is 56 kJ/mol, calculate the final temperature of the calorimeter contents. Assume the specific heat capacity of the solution is 4.184 J/g C and assume no heat Joss to the surroundings.arrow_forwardIs the following reaction the appropriate one to use in determining the enthalpy of formation of methane, CH4(g)? Why or why not? C(g)+4H(g)CH4(g)arrow_forwardThe reaction of quicklime, CaO, with water produces slaked lime, Ca(OH)2, which is widely used in the construction industry to make mortar and plaster. The reaction of quicklime and water is highly exothermic: CaO(s)+H2O(l)Ca(OH)2(s)H=350kJmol1 (a) What is the enthalpy of reaction per gram of quicklime that reacts?. (b) How much heat, in kilojoules, is associated with the production of 1 ton of slaked lime?arrow_forward
- When lightning strikes, the energy can force atmospheric nitrogen and oxygen to react to make NO: N2(g)+O2(g)2NO(g)H=+181.8kJ (a) Is this reaction endothermic or exothermic? (b) What quantities of reactants and products are assumed if H = +181.8 kJ? (c) What is the enthalpy change when 3.50 g nitrogen is reacted with excess O2(g)?arrow_forwardUnder what circumstances is the heat of a process equal to the enthalpy change for the process?arrow_forwardGive the definition of the standard enthalpy of formation for a substance. Write separate reactions for the formation of NaCl, H2O , C6H12O6, and PbSO4 that have H values equal to Hf for each compound.arrow_forward
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