CHEMISTRY:CENTRAL SCI.-W/ACCESS>CUSTOM<
15th Edition
ISBN: 9781323233252
Author: Brown
Publisher: PEARSON C
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Textbook Question
Chapter 14, Problem 12E
Given the data
use Hess's law to calculate ΔH for the reaction
N20(g) + NO2(g)
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Check out a sample textbook solutionChapter 14 Solutions
CHEMISTRY:CENTRAL SCI.-W/ACCESS>CUSTOM<
Ch. 14.2 - Identify the force present and explain whether...Ch. 14.2 - Identify the force present and explain whether...Ch. 14.2 - Which of the following cannot leave or enter a...Ch. 14.2 - Prob. 14.2.2PECh. 14.2 - According to the first law of thermodynamics, what...Ch. 14.2 - Write an equation that expresses the first law of...Ch. 14.3 - Calculate AB and determine whether the process is...Ch. 14.3 - For the following processes, calculate the change...Ch. 14.3 - A gas is confined to a cylinder fitted with a...Ch. 14.3 - Consider a system consisting of two oppositely...
Ch. 14.3 - Prob. 14.6.1PECh. 14.3 - Indicate which of the following is independent of...Ch. 14.4 - During a normal breath, our lungs expand about...Ch. 14.4 - How much work (in J) is involved in a chemical...Ch. 14.4 - Why is the change in enthalpy usually easier to...Ch. 14.4 - Under what condition will the enthalpy change of a...Ch. 14.4 - Assume that the following reaction occurs at...Ch. 14.4 - Suppose that the gas-phase reaction 2NO(g) + 02(g)...Ch. 14.5 - Which of the following statements is or are true?...Ch. 14.5 - Prob. 14.10.2PECh. 14.5 - In the accompanying cylinder diagram, a chemical...Ch. 14.5 - Prob. 14.11.2PECh. 14.6 - Consider the two diagrams that follow. Based on...Ch. 14.6 - Consider the conversion of compound A into...Ch. 14.6 - What is the electrostatic potential energy (in...Ch. 14.6 - What is the electrostatic potential energy (in...Ch. 14.6 - Prob. 14.14.1PECh. 14.6 - Use the equations given in Problem 5.15 to...Ch. 14.6 - A sodium ion, Na+, with a charge of 1.6 x 10-19 C...Ch. 14.6 - A magnesium ion, Mg2+, with a charge of 3.2 x...Ch. 14 -
5.74 Using values from Appendix C, calculate the...Ch. 14 - Complete combustion of 1 mol of acetone (C2H6O)...Ch. 14 -
5.87 Consider the reaction 2H(g) + O2(g) ...Ch. 14 - The air bags that provide protection in...Ch. 14 -
5.111 From the following data for three...Ch. 14 -
5.123 Consider two solutions, the first being...Ch. 14 -
For each of the following transitions, give the...Ch. 14 - In this chapter, we have learned about the...Ch. 14 -
6.12 State where in the periodic table these...Ch. 14 - Einstein's 1905 paper on the photoelectric effect...Ch. 14 -
5.48 Consider the decomposition of liquid...Ch. 14 - Under constant-volume conditions, the heat of...Ch. 14 - Given the data use Hess's law to calculate H for...Ch. 14 -
5.67
What is meant by the term standard...Ch. 14 - S
5.68
What is the value of the standard enthalpy...Ch. 14 - For each of the following compounds, write a...Ch. 14 - Write balanced equations that describe the...Ch. 14 - The following is known as the thermite reaction:...Ch. 14 - (a) What are the units usually used to express the...Ch. 14 - Using values from Appendix C , calculate the...Ch. 14 -
5.77 Gasoline is composed primarily of...Ch. 14 - Prob. 21ECh. 14 - Ethanol (C2H5OH) is blended with gasoline as an...Ch. 14 -
5.80 Methanol (CH3OH) is used as a fuel in race...Ch. 14 -
5.81 Without doing any calculations, predict the...Ch. 14 -
5.82 Without doing any calculations, predict...Ch. 14 - Use bond enthalpies in Table 5.4 Q to estimate for...Ch. 14 - Use bond enthalpies in Table 5.40 to estimate for...Ch. 14 - Use enthalpies of formation given in Appendix C to...Ch. 14 -
5.86
The nitrogen atoms in an N2 molecule are...Ch. 14 -
5.89
What is meant by the term fuel value?
Which...Ch. 14 -
5.90
Which releases the most energy when...Ch. 14 -
5.91
A serving of a particular ready-to-serve...Ch. 14 -
5.92 A pound of plain M&M® candies contains 96 g...Ch. 14 -
5.93 The heat of combustion of fructose,...Ch. 14 -
5.94 The heat of combustion of ethanol,...Ch. 14 -
5.95 The standard enthalpies of formation of...Ch. 14 -
5.98 It is interesting to compare the ‘fuel...Ch. 14 - At the end of 2012, global population was about...Ch. 14 - Prob. 39ECh. 14 - (a) For a generic second-order reaction, what...Ch. 14 - A sample of gas is contained in a...Ch. 14 - Limestone stalactites and stalagmites are formed...Ch. 14 - Consider the systems shown in Figure 5.10. In one...Ch. 14 -
5.105 A house is designed to have passive solar...Ch. 14 -
5.108 A coffee-cup calorimeter of the type shown...Ch. 14 -
5.107
When a 0.235-9 sample of benzoic acid is...Ch. 14 -
5.108 Meals-ready-to-eat (MREs) are military...Ch. 14 - 5.109 Burning methane in oxygen can produce three...Ch. 14 - Prob. 49ECh. 14 - Ammonia (NH3) boils at -33 °C; at this temperature...Ch. 14 - Prob. 51ECh. 14 - Prob. 52ECh. 14 -
5.116 TheSun supplies about 1.0 kilowatt of...Ch. 14 -
5.117 Itis estimated that the net amount of...Ch. 14 -
5.118 At 20 °C (approximately room temperature)...Ch. 14 - Suppose an Olympic diver who weighs 52.0 kg...Ch. 14 -
5.120 Consider the combustion of a single...Ch. 14 -
5.121 Consider the following unbalanced...Ch. 14 - Consider the following acid-neutralization...Ch. 14 -
5.125 A sample of a hydrocarbon is combusted...Ch. 14 -
5.126 The methane molecule, CH4, has the geometry...Ch. 14 -
5.127 One of the best-selling light, or...Ch. 14 - A source of electromagnetic radiation produces...Ch. 14 - Which type of visible light has a longer...Ch. 14 - Consider the following three statements: For any...Ch. 14 - Prob. 66ECh. 14 - Prob. 67ECh. 14 -
A laser emits light that has a frequency of 4.69...Ch. 14 - Prob. 69ECh. 14 - Calculate the velocity of a neutron whose de...Ch. 14 - An orbital has n = 4 and ml = 0, 1, 2, 3 -3, - 2,...Ch. 14 -
What is the designation for the subshell with = 5...Ch. 14 - How many of the elements in the second row of the...Ch. 14 - Write the electron configuration for silicon,...Ch. 14 - A certain atom has an ns2np2electron configuration...Ch. 14 -
Which group of elements is characterized by an...Ch. 14 -
A certain atom has a [noble gas]5s24d105p4...Ch. 14 - Prob. 78ECh. 14 - Prob. 79ECh. 14 -
6.2 A popular kitchen appliance produces...Ch. 14 - 6.3 The following diagrams represent two...Ch. 14 -
6.4 Stars do not all have the same temperature....Ch. 14 - 6 5 The familiar phenomenon of a rainbow results...Ch. 14 -
6.7 A certain quantum mechanical system has the...Ch. 14 - Consider the three electronic transitions in a...Ch. 14 - Prob. 86ECh. 14 -
6.9 The contour representation of one of the...Ch. 14 -
6.10 The accompanying drawing shows a contour...Ch. 14 -
8.11 Four possible electron configurations for a...Ch. 14 -
6.14
a What is the relationship between the...Ch. 14 - Label each of the following statements as true or...Ch. 14 - Determine which of the following statements are...Ch. 14 - Arrange the following kinds of electromagnetic...Ch. 14 - List the following types of electromagnetic...Ch. 14 - What is the frequency of radiation that has a...Ch. 14 - What is the frequency of radiation whose...Ch. 14 - A laser pointer used in a lecture hall emits light...Ch. 14 - Prob. 98AECh. 14 - If human height were quantized in 1-foot...Ch. 14 - A gas is confined to a cylinder under constant...Ch. 14 - The complete combustion of ethanol, C2H5OH(l), to...Ch. 14 - The decomposition of Ca(OH)2(s) into CaO(s) and...Ch. 14 - Prob. 103AECh. 14 -
5.42 Without referring to tables, predict which...Ch. 14 - Consider the following reaction: 2 Mg(s) + 02(g)2...Ch. 14 -
544 Consider the following reaction:
2...Ch. 14 - When solutions containing silver ions and chloride...Ch. 14 - At one time, a common means of forming small...Ch. 14 - Prob. 109AECh. 14 - 5.49
a What are the units of molar heat...Ch. 14 - Two solid objects, A and B, are placed in boiling...Ch. 14 - What is the specific heat of liquid water? What is...Ch. 14 -
5.52
a. Which substance in Table 5.2 requires...Ch. 14 - The specific heat of octane, C8H18(l), is 2.22...Ch. 14 -
6.54 Consider the data about gold metal in...Ch. 14 - When a 6-50-g sample of solid sodium hydroxide...Ch. 14 -
5.56
a. When a 4 25-g sample of solid ammonium...Ch. 14 - A 2.200-g sample of quinone (C5H402) is burned in...Ch. 14 -
8.68 A 1.800-g sample of phenol (C6H5OH) was...Ch. 14 -
5.60 Under constant-volume conditions, the heat...Ch. 14 -
5.61 Can you use an approach similar to Hess's...Ch. 14 -
5.62 Consider the following hypothetical...Ch. 14 - Calculate the enthalpy change for the reaction...Ch. 14 - From the enthalpies of reaction calculate H for...Ch. 14 - From the enthalpies of reaction Calculate H for...
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- 9.41 Under what conditions does the enthalpy change equal the heat of a process?arrow_forwardUnder what circumstances is the heat of a process equal to the enthalpy change for the process?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_forward
- Given the following reactions, N2H4(l)+O2(g)N2(g)+2H2O(g)H=534.2kJ H2(g)+12 O2(g)H2O(g)H=241.8kJ Calculate the heat of formation of hydrazine.arrow_forwardHow much heat is produced by combustion of 125 g of methanol under standard state conditions?arrow_forwardGiven the following thermochemical equations: 4B(s)+3O2(g)2B2O3(s)H=2543.8kJ H2(g)+12 O2(g)H2O(g)H=241.8kJ B2H6(s)+3O2B2O3(s)+3H2O(g)H=2032.9kJ Calculate H for the decomposition of B2H6 into its elements.arrow_forward
- Use Hesss law to calculate the enthalpy change for the formation of CS2() from C(s) and S(s) [C(s) + 2 S(s) CS2()] from the following enthalpy values. C(s)+O2(g)CO2(g)rH1=393.5kJ/mol-rxnS(s)+O2(g)SO2(g)rH2=296.8kJ/mol-rxnCS2(l)+3O2(g)CO2(g)+2SO2(g)rH3=1103.9kJ/mol-rxnarrow_forwardThe enthalpy change when 1 mol methane (CH4) is burned is 890 kJ. It takes 44.0 kJ to vaporize 1 mol water. What mass of methane must be burned to provide the heat needed to vaporize 1.00 g water?arrow_forward9.42 Why is enthalpy generally more useful than internal energy in the thermodynamics of real world systems?arrow_forward
- The first step in the preparation of lead from its ore (galena, PbS) consists of roasting the ore. PbS(s)+32O2(g)SO2(g)+PbO(s) Calculate the standard enthalpy change for this reaction, using enthalpies of formation (see Appendix C).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_forwardn Section 10.7, two characteristics of enthalpy changes for reactions are listed. What are these characteristics? Explain why these characteristics are true.arrow_forward
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