
Chemistry
13th Edition
ISBN: 9781260162370
Author: Chang
Publisher: MCG
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Textbook Question
Chapter 12, Problem 12.123QP
A 2.6-L sample of water contains 192 µg of lead. Does this concentration of lead exceed the safety limit of 0.050 ppm of lead per liter of drinking water? [Hint: 1 µg = 1 × 10−6 g. Parts per million (ppm) is defined as (mass of component/mass of solution) × 106.]
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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
✓
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18
Ar
Highlight each glycosidic bond in the molecule below. Then answer the questions in the table under the drawing area.
HO-
HO-
-0
OH
OH
HO
NG
HO-
HO-
OH
OH
OH
OH
NG
OH
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+
Suppose the molecule in the drawing area below were reacted with H₂ over a platinum catalyst. Edit the molecule to show what would happen to it. That is, turn
it into the product of the reaction.
Also, write the name of the product molecule under the drawing area.
Name: ☐
H
C=0
X
H-
OH
HO-
H
HO-
-H
CH₂OH
×
Chapter 12 Solutions
Chemistry
Ch. 12.2 - Prob. 1PECh. 12.2 - Prob. 1RCFCh. 12.2 - What is the strongest type of intermolecular force...Ch. 12.3 - Prob. 2PECh. 12.3 - Prob. 3PECh. 12.3 - Prob. 4PECh. 12.3 - Prob. 5PECh. 12.3 - A solution is prepared at 20C and its...Ch. 12.3 - Determine the percent composition by mass of LiCl...Ch. 12.3 - Prob. 3RCF
Ch. 12.4 - Using Figure 12.3, rank the potassium salts in...Ch. 12.5 - Calculate the molar concentration of oxygen in...Ch. 12.5 - Which of the following gases has the greatest...Ch. 12.5 - Prob. 2RCFCh. 12.6 - Calculate the vapor pressure of a solution made by...Ch. 12.6 - Prob. 8PECh. 12.6 - Prob. 9PECh. 12.6 - A solution of 0.85 g of an organic compound in...Ch. 12.6 - Prob. 11PECh. 12.6 - A solution contains equal molar amounts of liquids...Ch. 12.6 - What does it mean when we say that the osmotic...Ch. 12.6 - Calculate the boiling point and freezing point of...Ch. 12.7 - The freezing-point depression of a 0.100 m MgSO4...Ch. 12.7 - Indicate which compound in each of the following...Ch. 12.7 - Prob. 2RCFCh. 12 - Prob. 12.1QPCh. 12 - Prob. 12.2QPCh. 12 - Briefly describe the solution process at the...Ch. 12 - Prob. 12.4QPCh. 12 - Prob. 12.5QPCh. 12 - As you know, some solution processes are...Ch. 12 - Prob. 12.7QPCh. 12 - Describe the factors that affect the solubility of...Ch. 12 - Prob. 12.9QPCh. 12 - Prob. 12.10QPCh. 12 - Arrange the following compounds in order of...Ch. 12 - Explain the variations in solubility in water of...Ch. 12 - Prob. 12.13QPCh. 12 - Prob. 12.14QPCh. 12 - Calculate the percent by mass of the solute in...Ch. 12 - Calculate the amount of water (in grams) that must...Ch. 12 - Prob. 12.17QPCh. 12 - Prob. 12.18QPCh. 12 - Calculate the molalities of the following aqueous...Ch. 12 - For dilute aqueous solutions in which the density...Ch. 12 - Prob. 12.21QPCh. 12 - The concentrated sulfuric acid we use in the...Ch. 12 - Prob. 12.23QPCh. 12 - The density of an aqueous solution containing 10.0...Ch. 12 - Prob. 12.25QPCh. 12 - Describe the fractional crystallization process...Ch. 12 - A 3.20-g sample of a salt dissolves in 9.10 g of...Ch. 12 - The solubility of KNO3 is 155 g per 100 g of water...Ch. 12 - Prob. 12.29QPCh. 12 - Discuss the factors that influence the solubility...Ch. 12 - Prob. 12.31QPCh. 12 - Prob. 12.32QPCh. 12 - Prob. 12.33QPCh. 12 - A man bought a goldfish in a pet shop. Upon...Ch. 12 - A beaker of water is initially saturated with...Ch. 12 - A miner working 260 m below sea level opened a...Ch. 12 - The solubility of CO2 in water at 25C and 1 atm is...Ch. 12 - The solubility of N2 in blood at 37C and at a...Ch. 12 - Prob. 12.39QPCh. 12 - Write the equation representing Raoults law, and...Ch. 12 - Prob. 12.41QPCh. 12 - Prob. 12.42QPCh. 12 - Prob. 12.43QPCh. 12 - Prob. 12.44QPCh. 12 - Prob. 12.45QPCh. 12 - Prob. 12.46QPCh. 12 - Prob. 12.47QPCh. 12 - Describe how you would use freezing-point...Ch. 12 - Prob. 12.49QPCh. 12 - Prob. 12.50QPCh. 12 - The vapor pressure of benzene is 100.0 mmHg at...Ch. 12 - The vapor pressures of ethanol (C2H5OH) and...Ch. 12 - The vapor pressure of ethanol (C2H5OH) at 20C is...Ch. 12 - Prob. 12.54QPCh. 12 - What are the boiling point and freezing point of a...Ch. 12 - Prob. 12.56QPCh. 12 - Pheromones are compounds secreted by the females...Ch. 12 - The elemental analysis of an organic solid...Ch. 12 - How many liters of the antifreeze ethylene glycol...Ch. 12 - Prob. 12.60QPCh. 12 - Prob. 12.61QPCh. 12 - A solution of 2.50 g of a compound having the...Ch. 12 - A solution containing 0.8330 g of a polymer of...Ch. 12 - Prob. 12.65QPCh. 12 - A solution of 6.85 g of a carbohydrate in 100.0 g...Ch. 12 - Prob. 12.67QPCh. 12 - Prob. 12.69QPCh. 12 - Consider two aqueous solutions, one of sucrose...Ch. 12 - Arrange the following solutions in order of...Ch. 12 - Prob. 12.72QPCh. 12 - What are the normal freezing points and boiling...Ch. 12 - At 25C the vapor pressure of pure water is 23.76...Ch. 12 - Both NaCl and CaCl2 are used to melt ice on roads...Ch. 12 - A 0.86 percent by mass solution of NaCl is called...Ch. 12 - Prob. 12.77QPCh. 12 - Calculate the osmotic pressure of a 0.0500 M MgSO4...Ch. 12 - Prob. 12.79QPCh. 12 - Prob. 12.80QPCh. 12 - Prob. 12.81QPCh. 12 - Water and methanol are miscible with each other...Ch. 12 - Lysozyme is an enzyme that cleaves bacterial cell...Ch. 12 - Prob. 12.84QPCh. 12 - Prob. 12.85QPCh. 12 - Two liquids A and B have vapor pressures of 76...Ch. 12 - Prob. 12.87QPCh. 12 - Prob. 12.88QPCh. 12 - Prob. 12.89QPCh. 12 - Calculate the mass of naphthalene (C10H8) that...Ch. 12 - Consider the three mercury manometers shown. One...Ch. 12 - Prob. 12.92QPCh. 12 - Prob. 12.93QPCh. 12 - A solution of 1.00 g of anhydrous aluminum...Ch. 12 - Desalination is a process of removing dissolved...Ch. 12 - Prob. 12.96QPCh. 12 - A protein has been isolated as a salt with the...Ch. 12 - Prob. 12.98QPCh. 12 - Hydrogen peroxide with a concentration of 3.0...Ch. 12 - State which of the alcohols listed in Problem...Ch. 12 - Prob. 12.101QPCh. 12 - Iodine (I2) is only sparingly soluble in water...Ch. 12 - Prob. 12.103QPCh. 12 - In the apparatus shown, what will happen if the...Ch. 12 - Prob. 12.105QPCh. 12 - Concentrated hydrochloric acid is usually...Ch. 12 - Explain each of the following statements: (a) The...Ch. 12 - Prob. 12.108QPCh. 12 - A 0.050 M hydrofluoric acid (HF) solution is 11...Ch. 12 - Shown here is a plot of vapor pressures of two...Ch. 12 - Prob. 12.111QPCh. 12 - Prob. 12.112QPCh. 12 - Prob. 12.113QPCh. 12 - Prob. 12.114QPCh. 12 - Prob. 12.115QPCh. 12 - A mixture of ethanol and 1-propanol behaves...Ch. 12 - Prob. 12.117QPCh. 12 - Prob. 12.118QPCh. 12 - Prob. 12.119QPCh. 12 - Acetic acid is a weak acid that ionizes in...Ch. 12 - Making mayonnaise involves beating oil into small...Ch. 12 - Acetic acid is a polar molecule and can form...Ch. 12 - A 2.6-L sample of water contains 192 g of lead....Ch. 12 - Certain fishes in the Antarctic Ocean swim in...Ch. 12 - Prob. 12.125QPCh. 12 - Prob. 12.126QPCh. 12 - Prob. 12.127QPCh. 12 - At 27C, the vapor pressure of pure water is 23.76...Ch. 12 - Prob. 12.129QPCh. 12 - Liquids A (molar mass 100 g/mol) and B (molar mass...Ch. 12 - A very long pipe is capped at one end with a...Ch. 12 - Prob. 12.132QPCh. 12 - A mixture of liquids A and B exhibits ideal...Ch. 12 - Prob. 12.134QPCh. 12 - (a) Derive the equation relating the molality (m)...Ch. 12 - Prob. 12.136QPCh. 12 - A student carried out the following procedure to...Ch. 12 - Valinomycin is an antibiotic. It functions by...Ch. 12 - Prob. 12.139QPCh. 12 - Here is an after-dinner trick. With guests still...Ch. 12 - The molecule drawn here has shown promise as an...Ch. 12 - The Henrys law constant of oxygen in water at 25C...Ch. 12 - The diagram shows the vapor pressure curves for...Ch. 12 - Prob. 12.144QPCh. 12 - Prob. 12.146QP
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY