CHEMISTRY THE CENTRAL SCIENCE >EBOOK<
14th Edition
ISBN: 9780136873891
Author: Brown
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 5.5, Problem 5.6.1PE
Practice Exercise 1
When 0.243 g of Mg metal is combined with enough HCI to make 100 mL of solution in a constant-pressure calorimeter, the following reaction occurs:
Mg(s) + 2 HCl(aq)→MgCl2(aq)+H2(g)
If the temperature of the solution increases from 23.0 to 34.1 °C as a result of this reaction, calculate ΔH in kJ/mol Mg. Assume that the solution has a specific heat of 4-18 J/g-°C and a density of 1.00 g/mL.
- -19.1 kJ/mol
- -111 kJ/mol
- -191kJ/mol
- -464kJ/mol
- -961 kJ/mol
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
What mass of iron is produced if 48.5 kJ of heat are released according to the following equation?
Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g) ΔrH° = – 24.8 kJ/mol
Express your answer to 3 significant figures.
Answer g F
Answer the following the questions given below
Given (Dissolution of Sodium Hydroxide)
Mass of Water = 200g
Initial Temperature of water = 20.0°C
Final Temperature of water = 26.49 °C
?water= 5430.832J
?dissolution= 5566.6028J
Mass of Solid NaOH= 5.0g
Moles of solid NaOH=0.12501 mol
Δ?of NaOH dissolution= -44.51 kJ/mol
Questions:
1.Is the dissolution of NaOH endothermic or exothermic? Justify your answer.
2.If you touch the sides of a beaker containing NaOH being dissolved, will it feel warm or cold to touch?
QUESTION 4
In the reaction: Ni(s) + 2CO(g) + 2PF3(g) → Ni(CO)2(PF3)2 (l), ∆Hf ° is zero for __________.
a
CO (g)
b
both CO(g) and PF3(g)
c
Ni (s)
d
Ni(CO)2(PF3)2 (l)
e
PF3
Chapter 5 Solutions
CHEMISTRY THE CENTRAL SCIENCE >EBOOK<
Ch. 5.2 - A mixture of gases A2 and B2 are introduced to a...Ch. 5.2 - Practice Exercise 2 Calculate the change in the...Ch. 5.3 - A solid sample of Zn(OH)2 is added to 0.350 L of...Ch. 5.3 -
Practice Exercise 2
Calculate the work, in J, if...Ch. 5.3 - Practice Exercise 1 A chemical reaction that gives...Ch. 5.3 - Prob. 5.3.2PECh. 5.4 - Prob. 5.4.1PECh. 5.4 - Prob. 5.4.2PECh. 5.5 - The coinage metals (Group 1B) copper, silver, and...Ch. 5.5 - Prob. 5.5.2PE
Ch. 5.5 - Practice Exercise 1 When 0.243 g of Mg metal is...Ch. 5.5 - Practical exercise 2 When 50.0 mL of 0.100MAgNO3...Ch. 5.5 - Prob. 5.7.1PECh. 5.5 - Practice Exercise 2 A 0.5865-g sample of lactic...Ch. 5.6 - Prob. 5.8.1PECh. 5.6 - Prob. 5.8.2PECh. 5.6 - Calculate H for the reaction C(s)+...Ch. 5.6 - Prob. 5.9.2PECh. 5.7 - Prob. 5.10.1PECh. 5.7 - Prob. 5.10.2PECh. 5.7 - Prob. 5.11.1PECh. 5.7 - Prob. 5.11.2PECh. 5.7 -
Practice Exercise 1
Given 2SO2(g) + 02(g) —>...Ch. 5.7 - Prob. 5.12.2PECh. 5.8 - Use the average bond enthalpies in Table 5.41to...Ch. 5.8 -
Use the average bond enthalpies in Table 5.4 to...Ch. 5.9 - Prob. 5.14.1PECh. 5.9 - Prob. 5.14.2PECh. 5 - One of the important ideas of thermodynamics is...Ch. 5 - Two positively charged spheres, each with a charge...Ch. 5 - SI The accompanying photo shows a pipevine...Ch. 5 - Consider the accompanying energy diagram. Does...Ch. 5 - The contents of the closed box in each of the...Ch. 5 - Imagine that you are climbing a mountain. Is the...Ch. 5 - The diagram shows four states of a system, each...Ch. 5 - You may have noticed that when you compress the...Ch. 5 - Imagine a container placed in a tub of water, as...Ch. 5 - In the accompanying cylinder diagram, a chemical...Ch. 5 - Prob. 10ECh. 5 - Consider the two diagrams that follow. Based on...Ch. 5 - Consider the conversion of compound A into...Ch. 5 - What is the electrostatic potential energy (in...Ch. 5 - What is the electrostatic potential energy (in...Ch. 5 - The electrostatic force (not energy) of attraction...Ch. 5 - Use the equations given in Problem 5.15 to...Ch. 5 - A sodium ion, Na+, with a charge of 1.6 x 10-19 C...Ch. 5 - A magnesium ion, Mg2+, with a charge of 3.2 x...Ch. 5 - Identify the force present and explain whether...Ch. 5 - Identify the force present and explain whether...Ch. 5 - Which of the following cannot leave or enter a...Ch. 5 - Prob. 22ECh. 5 - According to the first law of thermodynamics, what...Ch. 5 - Write an equation that expresses the first law of...Ch. 5 - Calculate AB and determine whether the process is...Ch. 5 - For the following processes, calculate the change...Ch. 5 - A gas is confined to a cylinder fitted with a...Ch. 5 - Consider a system consisting of two oppositely...Ch. 5 - What is meant by the term state function? Give an...Ch. 5 - Indicate which of the following is independent of...Ch. 5 - During a normal breath, our lungs expand about...Ch. 5 - How much work (in J) is involved in a chemical...Ch. 5 - Why is the change in enthalpy usually easier to...Ch. 5 - Under what condition will the enthalpy change of a...Ch. 5 - Assume that the following reaction occurs at...Ch. 5 - Suppose that the gas-phase reaction 2NO(g) + 02(g)...Ch. 5 - A gas is confined to a cylinder under constant...Ch. 5 - A gas is confined to a cylinder under constant...Ch. 5 - The complete combustion of ethanol, C2H5OH(l), to...Ch. 5 - The decomposition of Ca(OH)2(s) into CaO(s) and...Ch. 5 - Ozone, 03(9), is a form of elemental oxygen that...Ch. 5 -
5.42 Without referring to tables, predict which...Ch. 5 - Consider the following reaction: 2 Mg(s) + 02(g)2...Ch. 5 -
544 Consider the following reaction:
2...Ch. 5 - When solutions containing silver ions and chloride...Ch. 5 - At one time, a common means of forming small...Ch. 5 -
5.47 Consider the combustion of liquid methanol,...Ch. 5 -
5.48 Consider the decomposition of liquid...Ch. 5 - 5.49
a What are the units of molar heat...Ch. 5 - Two solid objects, A and B, are placed in boiling...Ch. 5 - What is the specific heat of liquid water? What is...Ch. 5 -
5.52
a. Which substance in Table 5.2 requires...Ch. 5 - The specific heat of octane, C8H18(l), is 2.22...Ch. 5 -
6.54 Consider the data about gold metal in...Ch. 5 - When a 6-50-g sample of solid sodium hydroxide...Ch. 5 -
5.56
a. When a 4 25-g sample of solid ammonium...Ch. 5 - A 2.200-g sample of quinone (C5H402) is burned in...Ch. 5 -
8.68 A 1.800-g sample of phenol (C6H5OH) was...Ch. 5 - Under constant-volume conditions, the heat of...Ch. 5 -
5.60 Under constant-volume conditions, the heat...Ch. 5 -
5.61 Can you use an approach similar to Hess's...Ch. 5 -
5.62 Consider the following hypothetical...Ch. 5 - Calculate the enthalpy change for the reaction...Ch. 5 - From the enthalpies of reaction calculate H for...Ch. 5 - From the enthalpies of reaction Calculate H for...Ch. 5 - Given the data use Hess's law to calculate H for...Ch. 5 -
5.67
What is meant by the term standard...Ch. 5 - S
5.68
What is the value of the standard enthalpy...Ch. 5 - For each of the following compounds, write a...Ch. 5 - Write balanced equations that describe the...Ch. 5 - The following is known as the thermite reaction:...Ch. 5 -
5.72 Many portable gas heaters and grills use...Ch. 5 - Using values from Appendix C , calculate the...Ch. 5 -
5.74 Using values from Appendix C, calculate the...Ch. 5 - Complete combustion of 1 mol of acetone (C2H6O)...Ch. 5 - Calcium carbide (CaC2) reacts with water to form...Ch. 5 -
5.77 Gasoline is composed primarily of...Ch. 5 - Prob. 78ECh. 5 - Ethanol (C2H5OH) is blended with gasoline as an...Ch. 5 -
5.80 Methanol (CH3OH) is used as a fuel in race...Ch. 5 -
5.81 Without doing any calculations, predict the...Ch. 5 -
5.82 Without doing any calculations, predict...Ch. 5 - Use bond enthalpies in Table 5.4 Q to estimate for...Ch. 5 - Use bond enthalpies in Table 5.40 to estimate for...Ch. 5 - Use enthalpies of formation given in Appendix C to...Ch. 5 -
5.86
The nitrogen atoms in an N2 molecule are...Ch. 5 -
5.87 Consider the reaction 2H(g) + O2(g) ...Ch. 5 -
5.88 Consider the reaction H2(g) + I2(s) ...Ch. 5 -
5.89
What is meant by the term fuel value?
Which...Ch. 5 -
5.90
Which releases the most energy when...Ch. 5 -
5.91
A serving of a particular ready-to-serve...Ch. 5 -
5.92 A pound of plain M&M® candies contains 96 g...Ch. 5 -
5.93 The heat of combustion of fructose,...Ch. 5 -
5.94 The heat of combustion of ethanol,...Ch. 5 -
5.95 The standard enthalpies of formation of...Ch. 5 -
5.98 It is interesting to compare the ‘fuel...Ch. 5 - At the end of 2012, global population was about...Ch. 5 -
5.98 The automobile fuel called E85 consists of...Ch. 5 - The air bags that provide protection in...Ch. 5 -
5.100 An aluminum can of a soft drink is placed...Ch. 5 -
5.101 Consider a system consisting of the...Ch. 5 - A sample of gas is contained in a...Ch. 5 - Limestone stalactites and stalagmites are formed...Ch. 5 - Consider the systems shown in Figure 5.10. In one...Ch. 5 -
5.105 A house is designed to have passive solar...Ch. 5 -
5.108 A coffee-cup calorimeter of the type shown...Ch. 5 -
5.107
When a 0.235-9 sample of benzoic acid is...Ch. 5 -
5.108 Meals-ready-to-eat (MREs) are military...Ch. 5 - 5.109 Burning methane in oxygen can produce three...Ch. 5 - Prob. 110AECh. 5 -
5.111 From the following data for three...Ch. 5 - The hydrocarbons acetylene (C2H2) and benzene...Ch. 5 - Ammonia (NH3) boils at -33 °C; at this temperature...Ch. 5 -
5.114 Three common hydrocarbons that contain four...Ch. 5 -
5.115 A 201-lb man decides to add to his exercise...Ch. 5 -
5.116 TheSun supplies about 1.0 kilowatt of...Ch. 5 -
5.117 Itis estimated that the net amount of...Ch. 5 -
5.118 At 20 °C (approximately room temperature)...Ch. 5 - Suppose an Olympic diver who weighs 52.0 kg...Ch. 5 -
5.120 Consider the combustion of a single...Ch. 5 -
5.121 Consider the following unbalanced...Ch. 5 - Consider the following acid-neutralization...Ch. 5 -
5.123 Consider two solutions, the first being...Ch. 5 - The precipitation reaction between AgNO3(aq) and...Ch. 5 -
5.125 A sample of a hydrocarbon is combusted...Ch. 5 -
5.126 The methane molecule, CH4, has the geometry...Ch. 5 -
5.127 One of the best-selling light, or...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Question 12 W A 5.00 g-sample of KOH(s) at 25.0°C was added to 100.0 g of H2O(1) at room temperature inside an insulated cup calorimeter, and the contents were stirred. After all the KOH(s) dissolved, the temperature of the solution had increased. Based on the information given, which of the following best justifies the claim that the dissolution of KOH(s) is a thermodynamically favorable process? The forces between the ions and the water molecules are strọnger than the forces between water molecules, thus AH 0. Therefore, AG 0. Therefore, AG 0. Also, the ions become more widely dispersed as KOH(s) dissolves, thus AS > 0. Therefore. AG > 0. D The average kinetic energy of the particles increases, resulting in AH > 0. Also, the ions become more widely dispersed as KOH(s) dissolves, thus AS 0. esc Q Search or enter website name @ # $ % &arrow_forward4. Consider the reaction 2 H2 (g) + O2 (g) → 2 H2O (g) having AH = -484 kJ/mol. Determine the magnitude of the heat exchanged with the surroundings when 4 mol of H2 and 4 mol of O2 react. (a) 484 kJ (b) 968 kJ (c) 1452 kJ (d) 1936 kJ (e) 2904 kJ (f) 3872 kJarrow_forwardNeed help in chemistry problemarrow_forward
- What is the change in enthalpy (in kJ mol⁻¹) for the following reaction Cl₂(g) + 2LiF(s) ⇄ 2ClF(g) + 2Li(s) Question 1 options: 1) -1064 kJmol⁻¹ 2) 1123 kJmol⁻¹ 3) -1123 kJmol⁻¹ 4) 1064 kJmol⁻¹ 5) 199.65 kJmol⁻¹ How much heat is needed to convert 15.0 grams of BCl₃(s) at -107.4˚C to BCl₃(g) at 12.4˚C? Question 2 options: 1) 0.269 kJ 2) 4.95 kJ 3) 1.64 kJ 4) 3.04 kJ 5) 16.4 kJ This was all of the information given to us. Thank you!arrow_forwardWhat 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.arrow_forwardHow can we determine ΔH for the reaction between HCl and NaOH from theexperimental results if we know that the specific heat of water is 4.184 J/g-K, and that the density of water is 1.00 g/mL?arrow_forward
- Search 11:00 PM Tue Jan 24 F Question 26.a of 28 Tap here or pull up for additional resources A 8.65 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee cup calorimeter. Before placing the sample in the water, the temperature of the salt and water is 23.72 °C. After the salt has completely dissolved, the temperature of the solution is 28.54 °C. What is the total mass inside the calorimeter in grams? 2 a 1 4 7 +/-arrow_forwardPlease correct answer and don't use hand ratingarrow_forward#2 For each reaction, find the value of ΔSo. Report the value with the appropriate sign. (a) 3 NO2(g) + H2O(l) →2 HNO3(l) + NO(g) =____J/K (b) N2(g) + 3 F2(g) →2 NF3(g) =____J/K (c) C6H12O6(s) + 6 O2(g) →6 CO2(g) + 6 H2O(g) =____J/Karrow_forward
- Practice Exercise 1 When 0.243 g of Mg metal is combined with enough HCl to make 100 mL of solution in a constant-pressure calorimeter, the following reaction occurs: Mg(s) +2 HCI(aq) MgCl2(aq) + H2(8) If the temperature of the solution increases from 23.0 to 34.1 °C as a result of this reaction, calculate AH in kJ/mol Mg. Assume that the solution has a specific heat of 4.18 J/g-°C andarrow_forward-248 kJ/mol QUESTION 15 Using the following thermochemical equation, determine the amount of heat produced per kg of CO2 formed during the combustion of benzene (C6H6). 2 C6H6() +15 O2(g) → 12 CO2(g) + 6 H₂O(g) 1.19 x 104 kJ/kg CO2 O 2.30 x 104 kJ/kg CO2 8.40 x 105 kJ/kg CO₂ 4.34 × 104 kJ/kg CO₂ X 1.43 x 105 kJ/kg CO2 ΔΗ, rxn -6278 kJ Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Proarrow_forwardCalculate AHan for the following chemical equation, If necessary, balance the chemical equations. Pb(s) + PbO2(s) + H2SO (1) PBSO,(s) + H,0(1) kJ/molarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Chemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax
Chemistry for Engineering StudentsChemistryISBN:9781285199023Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
Chemistry: Matter and Change
Chemistry
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Glencoe/McGraw-Hill School Pub Co
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:OpenStax
Chemistry for Engineering Students
Chemistry
ISBN:9781285199023
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning
The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY