Solutions for Principles of General Chemistry
Problem 6.2P:
An adiabatic process is one that involves no heat transfer. What is the relationship between work...Problem 6.3P:
Name a common device used to accomplish each change: Electrical enegy to thermal energy Electrical...Problem 6.5P:
A system receives 425 J of heat from and delivers 425 J of work to its surroundings. What is the...Problem 6.6P:
A system releases 255 cal of heat to the surroundings and delivers 428 cal of work. What is the...Problem 6.9P:
The nutritional calorie (Calorie) is equivalent to 1 kcal. One pound of body fat is equivalent to...Problem 6.10P:
Classify the following processes as exothermic or endothermic: (a) freezing of water; (b) boiling of...Problem 6.12P:
Draw an enthalpy diagram for a general exothermic reaction; label the axis, reactants, products, and...Problem 6.16P:
Write a balanced equaĂ¼on and draw an approximate enthalpy diagram for (a) combustion of 1 mol of...Problem 6.17P:
Write a balanced equation and draw an approximate enthalpy diagram for (a) sublimation of dry ice...Problem 6.18P:
The circles represent a phase change at constant temperature: Is the value of each of the following...Problem 6.19P:
The scenes below represent a physical change takign place in a piston-cylinder assembly: Is...Problem 6.21P:
Is the specific heat capacity of a substance an intensive or extensive property? Explain.Problem 6.22P:
Find q when 22.0 g of water is heated from 25.0C to 100.C.Problem 6.24P:
A 295-g aluminum engine part at an initial temperature of 13.00C absorbs 75.0 k J of heat. What is...Problem 6.25P:
A 27.7-g sample of the radiator coolant ethylene glycol releases 688 J of heat. What was the initial...Problem 6.26P:
Two iron bolts of equal mass-one at 100.C, the other at 55C-are placed in an insulated container....Problem 6.28P:
When 155 mL of water at 26C is mixed with 75 mL of water at 85C, what is the final temperature?...Problem 6.32P:
When 25.0 mL of 0.500MH2SO4 is added to 25.0 mL of 1.00MKOH in a coffee-cup calorimeter at 23.50C,...Problem 6.34P:
Is H positive or negative when 1 mol of water vapor condenses to liquid water? Why? How does this...Problem 6.36P:
Consider the following balanced thermochemical equation for the decomposition of the mineral...Problem 6.37P:
When 1 mol of NO(g) forms from Its elements, 90.29 kJ of heat is absorbed, (a) Write a balanced...Problem 6.39P:
Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on...Problem 6.41P:
Most ethylene (C2H4), the starting material for producing polyethylene, comes from petroleum...Problem 6.46P:
Write the balanced overall equation (equation 3) for the following process, calculate Hoverall and...Problem 6.47P:
Write the balanced overall equation (equation 3) for the followign process, calculate Hoverall, and...Problem 6.48P:
Diamond and graphite are two crystalline forms of carbon. At 1 atm and 25C, diamond changes to...Problem 6.51P:
Use Table 6.3 or Appendix B to write a balanced formation equation at standard conditions for each...Problem 6.53P:
Calculate Hrxno for each of the following:...Problem 6.54P:
Calculate Hrxno for each of the following:...Problem 6.55P:
Copper(I) oxide can be oxidized to copperr (II) oxide: Cu2O(s)+12O2(g)2CuO(s)Hrxn0=146.0kJ Given Hf0...Problem 6.57P:
Nitroglycerine, C3H5(NO3)3(l), a powerful explosive used in mining, detonates to produce a hot...Problem 6.58P:
The common lead-acid car battery produces a large burst of current, even at low temperatures, and is...Problem 6.59P:
Stearic acid (C18H36O2) is a fatty acid, a molecule with a long hydrocarbon chain and an organic...Problem 6.60P:
A ballonist begins a trip in a helium-filled balloon in early morning when the temperature is 15C....Problem 6.65P:
Four 50.-g sample of different liquids are placed in separate beakers at Tinitial=25.00oC. Each...Problem 6.66P:
When simple sugars, called monosaccharides, link together, they form a variety of complex sugars...Problem 6.67P:
Reaction of gaseous CIF with F2 yields liquid CIF3, an important fluorinating agent. Use the...Problem 6.69P:
When organic matter decomposes under oxygen-free (anaerobic) conditions, methane is one of the...Problem 6.70P:
The heat of atomization (Hatomo) is the heat needed to form separated gaseous atoms from a substance...Problem 6.73P:
An aqueous wastes stream with a maximum concentration of 0.50MH2SO4(d=1.030g/mLat25oC) is...Problem 6.74P:
Kerosene, a common space-heater fuel, is a mixture of hydrocarbons whose average formula is C12H26....Problem 6.76P:
Phosphorus pentachloride is used in the industrial preparation of organic phosphorus compounds....Problem 6.78P:
Silicon tetrachloride is produced annually on the multikiloton scale and used in making...Problem 6.80P:
You want to determine Ho for the reaction Zn(s)+2HCl(aq)ZnCl2(aq)+H2(g) To do so, you first...Browse All Chapters of This Textbook
Chapter 1 - Keys To The Study Of ChemistryChapter 2 - The Components Of MatterChapter 3 - Stoichiometry Of Formulas And EquationsChapter 4 - Three Major Classes Of Chemical ReactionsChapter 5 - Gases And The Kinetic-molecular TheoryChapter 6 - Thermochemistry: Energy Flow And Chemical ChangeChapter 12 - Intermolecular Forces: Liquids, Solids, And Phase ChangesChapter 15 - Organic Compounds And The Atomic Properties Of CarbonChapter 19 - Ionic Equilibria In Aqueous Systems
Book Details
Table of Contents 1 KEYS TO THE STUDY OF CHEMISTRY 2 THE COMPONENTS OF MATTER 3 STOICHIOMETRY OF FORMULAS AND EQUATIONS 4 THREE MAJOR CLASSES OF CHEMICAL REACTIONS 5 GASES AND THE KINETIC-MOLECULAR THEORY 6 THERMOCHEMISTRY: ENERGY FLOW AND CHEMICAL CHANGE 7 QUANTUM THEORY AND ATOMIC STRUCTURE 8 ELECTRON CONFIGURATION AND CHEMICAL PERIODICITY 9 MODELS OF CHEMICAL BONDING 10 THE SHAPES OF MOLECULES 11 THEORIES OF COVALENT BONDING 12 INTERMOLECULAR FORCES: LIQUIDS, SOLIDS, AND PHASE CHANGES 13 THE PROPERTIES OF MIXTURES: SOLUTIONS AND COLLOIDS 14 THE MAIN-GROUP ELEMENTS: APPLYING PRINCIPLES OF BONDING AND STRUCTURE 15 ORGANIC COMPOUNDS AND THE ATOMIC PROPERTIES OF CARBON 16 KINETICS: RATES AND MECHANISMS OF CHEMICAL REACTIONS 17 EQUILIBRIUM: THE EXTENT OF CHEMICAL REACTIONS 18 ACID-BASE EQUILIBRIA 19 IONIC EQUILIBRIA IN AQUEOUS SYSTEMS 20 THERMODYNAMICS: ENTROPY, FREE ENERGY, AND THE DIRECTION OF CHEMICAL REACTIONS 21 ELECTROCHEMISTRY: CHEMICAL CHANGE AND ELECTRICAL WORK 22 THE TRANSITION ELEMENTS AND THEIR COORDINATION COMPOUNDS 23 NUCLEAR REACTIONS AND THEIR APPLICATIONS Appendix A COMMON MATHEMATICAL OPERATIONS IN CHEMISTRY Appendix B STANDARD THERMODYNAMIC VALUES FOR SELECTED SUBSTANCES AT 298 K Appendix C EQUILIBRIUM CONSTANTS AT 298 K Appendix D STANDARD ELECTRODE (HALF-CELL) POTENTIALS AT 298 K Appendix E ANSWERS TO SELECTED PROBLEMS
Sample Solutions for this Textbook
We offer sample solutions for Principles of General Chemistry homework problems. See examples below:
Chapter 1, Problem 1.1PChapter 1, Problem 1.14PChapter 1, Problem 1.34PSince one troy ounce is equivalent to 31.1 grams, mass of gold can be calculated as follows: Mass of...The formula to calculate the average mass is as follows: Average mass=M1+M2+M33 The value of M1 is...Since double eagle contains 90.0 % gold by mass, amount of gold in double eagle can be calculated as...The expression to calculate density of ball is as follows: d=MV Where, dis the density of ball. Mis...The formula to calculate volume of ocean is as follows: V=Ah Where, Visvolume of ocean. Aissurface...Assuming the particles in air are spherical structures with a dimeter of 2.5μm , the volume of a...
Chapter 2, Problem 2.1PChapter 2, Problem 2.7PGiven information: Total mass of fluorite sample 2.76 g , mass of calcium in the sample is 1.42 g ....Nuclide notation of an atom is represented as follows: XZA Where, X is atomic symbol of an element....Number of protons (Z) in the pair H13 and H23e is 1 and 2 respectively. Number of electrons in the...Atomic number of germanium is 32 in accordance with the modern periodic table. Atomic symbol of...Number of protons in the ionic depiction is 8. Hence its atomic number is 8. So the parent atom is...A molecular is a representation of a molecule by chemical symbol to indicate different types of...In ammonium sulfate, one sulfate ion (SO42-) .and two ammonium ion (NH4+) is attached by...In the depiction three fluorine atoms are connected with central atom bromine. Hence the molecular...Chapter 2, Problem 2.91PChapter 3, Problem 3.1PGiven Information: Number of moles of Cu2CO3 is 8.35 mol . The formula to convert moles to mass in...Chapter 3, Problem 3.16PChapter 3, Problem 3.25PC4H8 is the molecular formula that is obtained by multiplication of integral factor to an empirical...The expression to calculate the empirical formula mass of CH2 is as follows: Empirical formula mass...The expression to calculate empirical formula mass of CH is as follows: Empirical formula mass of...Chapter 3, Problem 3.37PChapter 3, Problem 3.38PThe formula ofgallium oxide is H2S .The unbalanced equation that needs to be balanced is as follows:...Chapter 3, Problem 3.89PThe formula to convert mass in grams to moles is as follows: Number of moles=Given massmolar mass...Chapter 4, Problem 4.1PChapter 4, Problem 4.14PExpression to calculate moles of MgCl2 is as follows: Moles=[(volume of solution(L))(molarity)]...Given: Mass of: NaCl = 26.5 gMgCl2 = 2.40 gMgSO4 = 3.35 gCaCl2 = 1.20 gKCl = 1.05 gNaHCO3 = 0.315...In this reaction, Al2( SO4)3 reacts with NaOH and forms Na3SO4 and Al(OH)3 . Since common sulfates...Chapter 4, Problem 4.46PGiven Information: The volume of HA solution in flask 1 is 43.5 mL , that of in flask 2 is 37.2 mL...In step 1: The expression used for the calculation of oxidation number of nitrogen in NH3 is as...Incomplete combustion of gasoline, C8H18 is given by the equation as follows:...The given two reactions are as follows: (1) 6HCl(aq)+Fe2O3(s)→2FeCl3(aq)+3H2O(l) (2)...The volume of gas changed with pressure whereas the volume of liquid is not changed with the...Chapter 5, Problem 5.13PChapter 5, Problem 5.14PChapter 5, Problem 5.15PFrom the ideal gas equation: P×V = n×R×TP×V = massmolar mass×R×T molar mass= massP×V×R×T Hence at...As the molar mass increases, the rate of effusion decreases. The molar mass of gases are: Disulfur...Sample I; PV = nRT0.05951 atm × 0.75 L = n × 0.08206 L.atm/mol.K × 343.15 Kn = 0.05951 atm × 0.75...Given information: Hawaiian volcano Kilauea emits an average of 1.5×103 m3 ofa gas each day....Chapter 5, Problem 5.93PChapter 5, Problem 5.100PChapter 5, Problem 5.103PWhen heat is absorbed by the system and work is done on the system, both q and w is positive. Since,...Chapter 6, Problem 6.58PChapter 6, Problem 6.60PThe value of standard heat of formation of compounds is as follows: H0f(C6H12O6(s))=−1273.3 kJ...Balanced chemical equation for the combustion reaction of benzene is: C6H6 (g) + 152 O2 → 6CO2 (g) +...Chapter 6, Problem 6.74PC (coal) + H2O (g) → CO(g) + H2(g) ΔH0rxn = 129.7 kJ …… (1) C O + H2O (g) → CO(g) + H2(g) ΔH0rxn =...Chapter 6, Problem 6.78PChapter 6, Problem 6.80P
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