Chemistry
3rd Edition
ISBN: 9780073402734
Author: Julia Burdge
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 5.8, Problem 1PPC
Practice Problem
CONCEPTUALIZE
The diagrams represent a system before and after a chemical reaction. Using the table of
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Students have asked these similar questions
The change in enthalpy for the reaction A → P is x kJ/mol. What does the enthalpy
change for the reaction P →A ?
(A) -x kJ/mol
(B) +x kJ/mol
(C) 0 kJ/mol
(D) -2x kJ/mol
Question9
What type of reaction and how much energy is involved in a reaction of boron trichloride with hydrochloric acid?
B2H6(g) +6Cl2(g) ⟷2BCl3(g) + 6HCl(g) ΔH= -755.4 kJ/mole
Group of answer choices
Exothermic with ΔH = -755.4 kJ/mole.
Exothermic with ΔH = +755.4 kJ/mole.
Endothermic with ΔH = -755.4 kJ/mole.
Endothermic with ΔH = +0.001324 kJ/mole.
Endothermic with ΔH = +755.4 kJ/mole.
Chapter 5 Solutions
Chemistry
Ch. 5.1 - Practice Problem ATTEMPT
(a) Calculate the energy...Ch. 5.1 - Practice Problem BUILD
(a) Calculate the velocity...Ch. 5.1 - Prob. 1PPCCh. 5.1 - Prob. 1CPCh. 5.1 - How much greater is the electrostatic potential...Ch. 5.1 - Prob. 3CPCh. 5.1 - 5.1.4 The label on packaged food indicates that it...Ch. 5.1 - 5.1.5 Arrange the following pairs of charged...Ch. 5.1 - Prob. 6CPCh. 5.2 - Practice Problem ATTEMPT
Calculate the change in...
Ch. 5.2 - Practice ProblemBUILD Calculate the magnitude of q...Ch. 5.2 - Prob. 1PPCCh. 5.2 - Calculate the overall change in internal energy...Ch. 5.2 - Calculate w, and determine whether work is done by...Ch. 5.2 - Prob. 3CPCh. 5.2 - Prob. 4CPCh. 5.3 - Prob. 1PPACh. 5.3 - Prob. 1PPBCh. 5.3 - Prob. 1PPCCh. 5.3 - Given the thermochemical equation: H 2 ( g ) + Br...Ch. 5.3 - Given the thermochemical equation: 2Cu 2 O ( s ) →...Ch. 5.4 - Prob. 1PPACh. 5.4 - Prob. 1PPBCh. 5.4 - Prob. 1PPCCh. 5.4 - Prob. 1CPCh. 5.4 - Prob. 2CPCh. 5.4 - Prob. 3CPCh. 5.4 - 5.4.4 Quantities of 50.0 mL of 1.00 M HCl and 50.0...Ch. 5.5 - Prob. 1PPACh. 5.5 - Prob. 1PPBCh. 5.5 - Prob. 1PPCCh. 5.5 - Prob. 1CPCh. 5.5 - Prob. 2CPCh. 5.6 - Prob. 1PPACh. 5.6 - Prob. 1PPBCh. 5.6 - Prob. 1PPCCh. 5.6 - Prob. 1CPCh. 5.6 - Prob. 2CPCh. 5.6 - Prob. 3CPCh. 5.6 - Prob. 4CPCh. 5.7 - Prob. 1PPACh. 5.7 - Prob. 1PPBCh. 5.7 - Prob. 1PPCCh. 5.8 - Prob. 1PPACh. 5.8 - Prob. 1PPBCh. 5.8 - Practice ProblemCONCEPTUALIZE The diagrams...Ch. 5.9 - Practice ProblemATTEMPT Use the following data to...Ch. 5.9 - Prob. 1PPBCh. 5.9 - Prob. 1PPCCh. 5 - Using data from Appendix 2, calculate the standard...Ch. 5 - Prob. 2KSPCh. 5 - Prob. 3KSPCh. 5 - Using only whole-number coefficients, the...Ch. 5 - Prob. 1QPCh. 5 - Prob. 2QPCh. 5 - Prob. 3QPCh. 5 - 5.4 A truck initially trawling at 60 km/h is...Ch. 5 - These are various forms of energy: chemical, heat,...Ch. 5 - 5.6 Define these terms: thermochemistry,...Ch. 5 - 5.7 Stoichiometry is based on the law of...Ch. 5 - Prob. 8QPCh. 5 - Decomposition reactions are usually endothermic,...Ch. 5 - Prob. 10QPCh. 5 - Prob. 11QPCh. 5 - Prob. 12QPCh. 5 - Prob. 13QPCh. 5 - Prob. 14QPCh. 5 - Prob. 15QPCh. 5 - Prob. 16QPCh. 5 - Prob. 17QPCh. 5 - Use the following diagrams for Problems 5.17 and...Ch. 5 - Consider these changes. (a) Hg ( t ) → Hg ( g )...Ch. 5 - Prob. 20QPCh. 5 - Prob. 21QPCh. 5 - 5.22 Explain the meaning of this thermochemical...Ch. 5 - Consider this reaction: 2 CH 3 OH ( l ) + 3 O 2 (...Ch. 5 - Prob. 24QPCh. 5 - Prob. 25QPCh. 5 - Prob. 26QPCh. 5 - Prob. 27QPCh. 5 - Prob. 28QPCh. 5 - Prob. 29QPCh. 5 - Prob. 30QPCh. 5 - Prob. 31QPCh. 5 - For most biological processes, the changes in...Ch. 5 - Prob. 33QPCh. 5 - 5.34 Define calorimetry and describe two commonly...Ch. 5 - A 6.22-kg piece of copper metal is heated from 20...Ch. 5 - Prob. 36QPCh. 5 - Prob. 37QPCh. 5 - A 0.1375-g sample of solid magnesium is burned in...Ch. 5 - A quantity of 2 .00 × 10 2 mL of 0 .862 M HCl is...Ch. 5 - 5.40 A 50.75 g sample of water at is added to a...Ch. 5 - A 25.95-g sample of methanol at 35 .6°C is added...Ch. 5 - A piece of silver with a mass of 362 g has a heat...Ch. 5 - Prob. 43QPCh. 5 - Consider the following data: Metal Al Cu Mass(g)...Ch. 5 - Prob. 45QPCh. 5 - Prob. 46QPCh. 5 - Prob. 47QPCh. 5 - Prob. 48QPCh. 5 - Prob. 49QPCh. 5 - Prob. 50QPCh. 5 - 5.57 Determine the value of for the following...Ch. 5 - Prob. 52QPCh. 5 - Prob. 53QPCh. 5 - Prob. 54QPCh. 5 - Prob. 55QPCh. 5 - Prob. 56QPCh. 5 - Prob. 57QPCh. 5 - Prob. 58QPCh. 5 - Prob. 59QPCh. 5 - Prob. 60QPCh. 5 - Prob. 61QPCh. 5 - Prob. 62QPCh. 5 - Prob. 63QPCh. 5 - Prob. 64QPCh. 5 - Prob. 65QPCh. 5 - Prob. 66QPCh. 5 - Prob. 67QPCh. 5 - Prob. 68QPCh. 5 - Pentaborane - 9 ( B 5 H 9 ) is a colorless, highly...Ch. 5 - Prob. 70QPCh. 5 - Prob. 71QPCh. 5 - Prob. 72QPCh. 5 - Prob. 73QPCh. 5 - Prob. 74QPCh. 5 - Prob. 75APCh. 5 - Prob. 76APCh. 5 - Prob. 77APCh. 5 - Prob. 78APCh. 5 - Prob. 79APCh. 5 - Prob. 80APCh. 5 - Prob. 81APCh. 5 - Prob. 82APCh. 5 - Ethanol ( C 2 H 5 OH ) and gasoline (assumed to be...Ch. 5 - Prob. 84APCh. 5 - The heat of vaporization of a liquid ( Δ H vap )...Ch. 5 - Prob. 86APCh. 5 - Prob. 87APCh. 5 - Prob. 88APCh. 5 - Prob. 89APCh. 5 - Prob. 90APCh. 5 - 5.97 The enthalpy of combustion of benzoic add is...Ch. 5 - 5.98 At , the standard enthalpy of formation of...Ch. 5 - From the enthalpy of formation for CO, and the...Ch. 5 - In the nineteenth century, two scientists named...Ch. 5 - Prob. 95APCh. 5 - Prob. 96APCh. 5 - Prob. 97APCh. 5 - A quantity of 85 .0 mL of 0 .600 M HCl is mixed...Ch. 5 - Prob. 99APCh. 5 - Prob. 100APCh. 5 - A 4.117-g impure sample of glucose (C 4 H 12 O 6 )...Ch. 5 - Prob. 102APCh. 5 - In a constant-pressure calorimetry experiment, a...Ch. 5 - Prob. 104APCh. 5 - Give an example for each of the following...Ch. 5 - Prob. 106APCh. 5 - Prob. 107APCh. 5 - 5.114 A 3.52-g sample of ammonium nitrate was...Ch. 5 - 5.115 A quantity of is mixed with in a...Ch. 5 - Prob. 110APCh. 5 - Prob. 111APCh. 5 - Prob. 112APCh. 5 - Prob. 113APCh. 5 - Prob. 114APCh. 5 - 5.121 A gas company in Massachusetts charges 27...Ch. 5 - Prob. 116APCh. 5 - For reactions in condensed phases ( liquids and...Ch. 5 - Prob. 118APCh. 5 - Prob. 119APCh. 5 - The so-called hydrogen economy is based on...Ch. 5 - Prob. 121APCh. 5 - 5.128 Calculate the standard enthalpy change for...Ch. 5 - Prob. 123APCh. 5 - Prob. 124APCh. 5 - Why are cold, damp air and hot, humid air more...Ch. 5 - A woman expends 95 kJ of energy walking a...Ch. 5 - The carbon dioxide exhaled by sailors in a...Ch. 5 - Prob. 128APCh. 5 - Acetylene ( C 2 H 2 ) can be made by combining...Ch. 5 - (a) A person drinks four glasses of cold water ( 3...Ch. 5 - Both glucose and fructose are simple sugars with...Ch. 5 - Prob. 132APCh. 5 - Prob. 133APCh. 5 - Prob. 134APCh. 5 - Prob. 135APCh. 5 - Prob. 136APCh. 5 - 5.143 Hydrazine decomposes to form ammonia and...Ch. 5 - Prob. 138APCh. 5 - Prob. 1SEPPCh. 5 - What is the heat capacity ( C v ) of the...Ch. 5 - What is the energy content of the food? a) 22 .8...Ch. 5 - 4. What would be the effect on the result if the...
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- Give 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_forwardExplain how the heat measured in Example 5.5 differs from the enthalpy change for the exothermic reaction described by the following equation: HCl(aq)+NaCl(aq)H2O(l)arrow_forwardHydrogen cyanide is used in the manufacture of clear plastics such as Lucite and Plexiglas. It is prepared from ammonia and natural gas (CH4). 2NH3(g)+3O2(g)+2CH4(g)2HCN(g)+6H2O(g) The reaction evolves 469 kJ of heat per mol of HCN formed. Is the reaction endothermic or exothermic? What is the value of q when 2 mol HCN forms?arrow_forward
- In a constant-volume calorimeter, 35.0g of H2cools from 75.3C to25.0C. Calculate w, q, U, and H for the process.arrow_forwardWhen one mole of calcium carbonate reacts with ammonia, solid calcium cyanamide, CaCN2, and liquid water are formed. The reaction absorbs 90.1 kJ of heat. (a) Write a balanced thermochemical equation for the reaction. (b) Using Table 8.3, calculate Hf for calcium cyanamide.arrow_forwardThe process of dissolving ammonium nitrate, NH4NO3, in water is an endothermic process. What is the sign of q? If you were to add some ammonium nitrate to water in a flask, would you expect the flask to feel warm or cool?arrow_forward
- Chlorine trifluoride is a toxic, intensely reactive gas. It was used in World War II to make incendiary bombs. It reacts with ammonia and forms nitrogen, chlorine, and hydrogen fluoride gases. When two moles of chlorine trifluoride react, 1196 kJ of heat are evolved. (a) Write a thermochemical equation for the reaction. (b) What is Hf for ClF3?arrow_forward9.73 Without looking up any numerical data or doing calculations, predict whether the enthalpy change for each of the following reactions should he positive, negative, or zero. (a) H2O(l)H2O(s) (b) N2(g)2N(g) (c) CH4(g)+2O2(g)CO2(g)+2H2O(l) (d) CO2(s)CO2(g)arrow_forwardHypothetical elements A2 and B2 react according to the following equation, forming the compound AB. A2(aq)+B2(aq)2AB(aq);H=+271kJ/mol If solutions A2(aq) and B2(aq), starting at the same temperature, are mixed in a coffee-cup calorimeter, the reaction that occurs is a exothermic, and the temperature of the resulting solution rises. b endothermic, and the temperature of the resulting solution rises. c endothermic, and the temperature of the resulting solution falls. d exothermic, and the temperature of the resulting solution falls. e exothermic or endothermic, depending on the original and final temperatures.arrow_forward
- 9.91 You want to heat the air in your house with natural gas (CH4). Assume your house has 275 m2(ahout 2800 ft2) of floor area and that the ceilings are 2.50 m from the floors. The air in the house has a molar heat capacity of 29.1 J mol-l K-l. (The number of moles of air in the house may he found by assuming that the average molar mass of air is 28.9 g/mol and that the density of air at these temperatures is 1.22 g/L.) What mass of methane do you have to burn to heat the air from 15.0 to 22.0°C?arrow_forwardHelp with picture providedarrow_forwardPlease correct answer and don't use hand raitingarrow_forward
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