Chemistry: Principles and Reactions
8th Edition
ISBN: 9781305079373
Author: William L. Masterton, Cecile N. Hurley
Publisher: Cengage Learning
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Textbook Question
Chapter 8, Problem 39QAP
Given
(a) What is the heat of formation of aluminum oxide?
(b) What is ΔH° for the formation of 12.50 g of aluminum oxide?
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Homework 13 (Ch17)
Question 4 of 4 (1 point) | Question Attempt: 2 of 2
✓ 1
✓ 2
= 3
4
Time Remaining: 4:25:54
Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction:
2CH3OH (g)+302 (g) → 2CO2 (g) + 4H₂O (g)
Round your answer to zero decimal places.
☐ kJ
x10
☐
Subm
Check
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Identifying the major species in weak acid or weak base equilibria
Your answer is incorrect.
• Row 2: Your answer is incorrect.
• Row 3: Your answer is incorrect.
• Row 6: Your answer is incorrect.
0/5
The preparations of two aqueous solutions are described in the table below. For each solution, write the chemical formulas of the major species present at
equilibrium. You can leave out water itself.
Write the chemical formulas of the species that will act as acids in the 'acids' row, the formulas of the species that will act as bases in the 'bases' row, and the
formulas of the species that will act as neither acids nor bases in the 'other' row.
You will find it useful to keep in mind that HF is a weak acid.
acids:
HF
0.1 mol of NaOH is added to
1.0 L of a 0.7M HF
solution.
bases:
0.13 mol of HCl is added to
1.0 L of a solution that is
1.0M in both HF and KF.
Exponent
other:
F
acids: HF
bases: F
other:
K
1
0,0,...
?
000
18
Ar
Using reaction free energy to predict equilibrium composition
Consider the following equilibrium:
2NOCI (g) 2NO (g) + Cl2 (g) AGº =41. kJ
Now suppose a reaction vessel is filled with 4.50 atm of nitrosyl chloride (NOCI) and 6.38 atm of chlorine (C12) at 212. °C. Answer the following questions
about this system:
?
rise
Under these conditions, will the pressure of NOCI tend to rise or fall?
x10
fall
Is it possible to reverse this tendency by adding NO?
In other words, if you said the pressure of NOCI will tend to rise, can that
be changed to a tendency to fall by adding NO? Similarly, if you said the
pressure of NOCI will tend to fall, can that be changed to a tendency to
rise by adding NO?
yes
no
If you said the tendency can be reversed in the second question, calculate
the minimum pressure of NO needed to reverse it.
Round your answer to 2 significant digits.
0.035 atm
✓
G
00.
18
Ar
Chapter 8 Solutions
Chemistry: Principles and Reactions
Ch. 8 - Principles of Heat Flow Titanium is a metal used...Ch. 8 - Prob. 2QAPCh. 8 - Copper is used in building the integrated...Ch. 8 - Mercury was once used in thermometers and...Ch. 8 - The specific heat of aluminum is 0.902J/gC. How...Ch. 8 - Chromium has a specific heat of 0.450J/gC. How...Ch. 8 - Magnesium sulfate is often used in first-aid hot...Ch. 8 - Sodium chloride is added in cooking to enhance the...Ch. 8 - When 375 mL of water (d=1.00g/mL) at 32C are mixed...Ch. 8 - How many mL of water at 10C (2 significant...
Ch. 8 - When one mol of KOH is neutralized by sulfuric...Ch. 8 - The heat of neutralization, Hneut, can be defined...Ch. 8 - Fructose is a sugar commonly found in fruit. A...Ch. 8 - In earlier times, ethyl ether was commonly used as...Ch. 8 - Isooctane is a primary component of gasoline and...Ch. 8 - Ethyl alcohol, C2H5OH, is the intoxicating agent...Ch. 8 - Acetic acid, HC2H3O2, is responsible for the sour...Ch. 8 - Acetylene, C2H2, is used in welding torches. It...Ch. 8 - Salicylic acid, C7H6O3, is one of the starting...Ch. 8 - Methanol (CH3OH) is also known as wood alcohol and...Ch. 8 - Nitrogen oxide (NO) has been found to be a key...Ch. 8 - Small amounts of oxygen gas can be prepared in the...Ch. 8 - In the late eighteenth century Priestley prepared...Ch. 8 - Prob. 24QAPCh. 8 - Strontium metal is responsible for the red color...Ch. 8 - Nitroglycerin, C3H5(NO3)3(l), is an explosive most...Ch. 8 - A typical fat in the body is glyceryl trioleate,...Ch. 8 - Use the same fat described in Question 27. (a)...Ch. 8 - Which requires the absorption of a greater amount...Ch. 8 - Which evolves more heat—freezing 100.0 g of...Ch. 8 - A student is asked to calculate the amount of heat...Ch. 8 - Follow the step-wise process outlined in Problem...Ch. 8 - A lead ore, galena, consisting mainly of lead(II)...Ch. 8 - A reaction used to produce the silicon for...Ch. 8 - Given the following thermochemical equations,...Ch. 8 - Given the following thermochemical equations:...Ch. 8 - Write thermochemical equations for the...Ch. 8 - Write thermochemical equations for the formation...Ch. 8 - Given 2Al2O3(s)4Al(s)+3O2(g)H=3351.4kJ (a) What is...Ch. 8 - Given 2Cr2O3(s)4Cr(s)+3O2(g)H=+2269.4kJ (a) What...Ch. 8 - Limestone, CaCO3, when subjected to a temperature...Ch. 8 - When hydrazine reacts with oxygen, nitrogen gas...Ch. 8 - Use Table 8.3 to obtain AHO for the following...Ch. 8 - Use Table 8.3 to obtain H for the following...Ch. 8 - Use the appropriate tables to calculate H for (a)...Ch. 8 - Use the appropriate tables to calculate H for (a)...Ch. 8 - When one mole of nitroglycerine, C3H5(NO3)3(l)...Ch. 8 - When one mole of calcium carbonate reacts with...Ch. 8 - Chlorine trifluoride is a toxic, intensely...Ch. 8 - When one mole of ethylene gas, C2H4, reacts with...Ch. 8 - Glucose, C6H12O6(s), (H f =1275.2kJ/mol) is...Ch. 8 - When ammonia reacts with dinitrogen oxide gas (H f...Ch. 8 - How many kJ are equal to 3.27 L atm of work?Ch. 8 - How many L atm are equal to 12.2 kJ of work?Ch. 8 - Find (a) E when a gas absorbs 18 J of heat and has...Ch. 8 - Calculate (a) q when a system does 54 J of work...Ch. 8 - Consider the following reaction in a vessel with a...Ch. 8 - Consider the following reaction in the vessel...Ch. 8 - Determine the difference between H and E at 25C...Ch. 8 - For the vaporization of one mole of bromine at...Ch. 8 - Consider the combustion of propane, C3H8, the fuel...Ch. 8 - Consider the combustion of one mole of methyl...Ch. 8 - Butane gas, C4H10, is sold to campers as bottled...Ch. 8 - The BTU (British thermal unit) is the unit of...Ch. 8 - Natural gas companies in the United States use the...Ch. 8 - Prob. 66QAPCh. 8 - Given the following reactions,...Ch. 8 - In World War II, the Germans made use of otherwise...Ch. 8 - Prob. 69QAPCh. 8 - Consider the reaction between methane and oxygen...Ch. 8 - Consider burning ethane gas, C2H6 in oxygen...Ch. 8 - On complete combustion at constant pressure, a...Ch. 8 - Microwave ovens convert radiation to energy. A...Ch. 8 - In 2010, 3.30109 gallons of gasoline were consumed...Ch. 8 - Some solar-heated homes use large beds of rocks to...Ch. 8 - Consider a solution prepared by dissolving 10.00 g...Ch. 8 - Draw a cylinder with a movable piston containing...Ch. 8 - Redraw the cylinder in Question 77 after work has...Ch. 8 - Which statement(s) is/are true about bond...Ch. 8 - Equal masses of liquid A, initially at 100C, and...Ch. 8 - Determine whether the statements given below are...Ch. 8 - An exothermic reaction is carried out in a...Ch. 8 - Determine whether the statements given below are...Ch. 8 - Microwave ovens emit microwave radiation that is...Ch. 8 - On a hot day, you take a six-pack ot a on a pcmc,...Ch. 8 - Prob. 86QAPCh. 8 - The thermite reaction was once used to weld rails:...Ch. 8 - A sample of sucrose, C12H22O11, is contaminated by...Ch. 8 - A wad of steel wool (specific heat=0.45J/gC) at...Ch. 8 - Consider a metal ion A2+ and its nitrate salt, In...
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