Introductory Chemistry, Books a la Carte Plus Mastering Chemistry with Pearson eText -- Access Card Package (6th Edition)
6th Edition
ISBN: 9780134557311
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 7, Problem 101E
Hard water often contains dissolved
and
ions. One way to soften water is to add phosphates. The phosphate ion forms insoluble precipitates with calcium and magnesium ions, removing them from solution. Suppose that a solution contains aqueous calcium chloride and aqueous magnesium nitrate. Write molecular, complete ionic, and net ionic equations showing how the addition of sodium phosphate precipitates the calcium and magnesium ions.
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Consider the "C NMR spectrum below.
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The spectrum belongs to which one of the following constitutional isomers of the compound C,H12? Select the single best answer.
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The structure of compound 1,3,5-trimethylbenzene (mesitylene) is given below.
How many signals would you expect to find in the 'H NMR spectrum of 1,3,5-trimethylbenzene (mesitylene)?
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1
How many signals do you expect in the 'H NMR spectrum for this molecule?
CI CI
Cl
Write the answer in the table below.
Also, in each of the drawing areas below is a copy of the molecule, with H atoms shown. In each copy, one of the H atoms is highlighted red. Highlight in red all
other H atoms that would contribute to the same signal as the H already highlighted red.
Note for advanced students: Remember, a multiplet is considered one signal in the 'H NMR spectrum.
1
Number of signals in the 'H NMR spectrum.
☐
For the molecule in the top drawing area, highlight in red any other H atoms that will contribute to the same
signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at right.
No additional H atoms to highlight in
top molecule
For the molecule in the bottom drawing area, highlight in red any other H atoms that will contribute to the
same signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at…
Chapter 7 Solutions
Introductory Chemistry, Books a la Carte Plus Mastering Chemistry with Pearson eText -- Access Card Package (6th Edition)
Ch. 7 - Which process is a chemical reaction? a. Gasoline...Ch. 7 - How many oxygen atoms are on the reactant side of...Ch. 7 - Q3. What is the coefficient for hydrogen in the...Ch. 7 - Q4. Determine the correct set of coefficients to...Ch. 7 - Which compound is soluble in water? a. Fe(OH)2 b....Ch. 7 - Name the precipitate that forms (if any) when...Ch. 7 - Q7. Which set of reactants forms a solid...Ch. 7 - Q8. What is the net ionic equation for the...Ch. 7 - Q9. Complete the equation:
a.
b.
c.
d. No...Ch. 7 - Prob. 10SAQ
Ch. 7 - What are the products of the balanced equation for...Ch. 7 - Q12. Precipitation reactions are best classified...Ch. 7 - 1. What is a chemical reaction? List some...Ch. 7 - If you could observe atoms and molecules with the...Ch. 7 - 3. What are the main indications that a chemical...Ch. 7 - What is a chemical equation? Provide an example...Ch. 7 - Prob. 5ECh. 7 - To balance a chemical equation, adjust the...Ch. 7 - 7. Is the chemical equation balanced? Why or why...Ch. 7 - 8. What is an aqueous solution? List two...Ch. 7 - 9. What does it mean if a compound is referred to...Ch. 7 - Explain what happens to an ionic substance when it...Ch. 7 - Do polyatomic ions dissociate when they dissolve...Ch. 7 - What is a strong electrolyte solution?Ch. 7 - 13. What are the solubility rules, and how are...Ch. 7 - What is a precipitation reaction? Provide an...Ch. 7 - 15. Is the precipitate in a precipitation reaction...Ch. 7 - 16. Describe the difference between a molecular...Ch. 7 - What is an acid-base reaction? List an example and...Ch. 7 - Prob. 18ECh. 7 - What is a gas evolution reaction? Give an example.Ch. 7 - What is a redox reaction? Give an example.Ch. 7 - Prob. 21ECh. 7 - Prob. 22ECh. 7 - 23. Explain the difference between a synthesis...Ch. 7 - 24. Explain the difference between a...Ch. 7 - Which observation is consistent with a chemical...Ch. 7 - Which observation is consistent with a chemical...Ch. 7 - Vinegar forms bubbles when it is poured into the...Ch. 7 - When a chemical drain opener is added to a clogged...Ch. 7 - 29. When a commercial hair bleaching mixture is...Ch. 7 - When water is boiled in a pot, it bubbles. Has a...Ch. 7 - For each chemical equation (which may or may not...Ch. 7 - For each chemical equation (which may or may not...Ch. 7 - 33. Consider the unbalanced chemical equation.
A...Ch. 7 - Consider the unbalanced chemical equation....Ch. 7 - Prob. 35ECh. 7 - Write a balanced chemical equation for each...Ch. 7 - Write a balanced chemical equation for each...Ch. 7 - Write a balanced chemical equation for each...Ch. 7 - 39. When solid sodium is added to liquid water, it...Ch. 7 - When iron rusts, solid iron reacts with gaseous...Ch. 7 - 41. Sulfuric acid in acid rain forms when gaseous...Ch. 7 - Nitric acid in acid rain forms when gaseous...Ch. 7 - Prob. 43ECh. 7 - Prob. 44ECh. 7 - 45. Write a balance chemical equation for the...Ch. 7 - Write a balanced chemical equation for the...Ch. 7 - 47. Balance each chemical equation.
a.
b.
c.
d....Ch. 7 - Balance each chemical equation. a....Ch. 7 - 49. Balance each chemical equation.
a.
b.
c.
d....Ch. 7 - Balance each chemical equation. a....Ch. 7 - 51. Is each chemical equation correctly balanced?...Ch. 7 - Prob. 52ECh. 7 - Prob. 53ECh. 7 - Propane camping stoves produce heat by the...Ch. 7 - 55. Catalytic converters work to remove nitrogen...Ch. 7 - Prob. 56ECh. 7 - 57. Is each compound soluble or insoluble? For the...Ch. 7 - 58. Is each compound soluble or insoluble? For the...Ch. 7 - 59. Pair each cation on the left with an anion on...Ch. 7 - Pair each cation on the left with an anion on the...Ch. 7 - 61. Move any misplaced compounds to the correct...Ch. 7 - Prob. 62ECh. 7 - Complete and balance each equation. If no reaction...Ch. 7 - Complete and balance each equation. If no reaction...Ch. 7 - Write a molecular equation for the precipitation...Ch. 7 - Write a molecular equation for the precipitation...Ch. 7 - Correct any incorrect equations. If no reaction...Ch. 7 - 68. Correct any incorrect equations. If no...Ch. 7 - 69. Identify the spectator ions in the complete...Ch. 7 - Identify the spectator ions in the complete ionic...Ch. 7 - 71. Write balanced complete ionic and net ionic...Ch. 7 - Write balanced complete ionic and net ionic...Ch. 7 - Mercury(I) ions (Hg22+) can be removed from...Ch. 7 - 74. Lead ions can be removed from solution by...Ch. 7 - Write complete ionic and net ionic equations for...Ch. 7 - 76. Write complete ionic and net ionic equations...Ch. 7 - When a hydrochloric acid solution is combined with...Ch. 7 - 78. A breaker of nitric acid is neutralized with...Ch. 7 - 79. Complete and balance each acid-base...Ch. 7 - Complete and balance each acid-base reaction. a....Ch. 7 - 81. Complete and balance each gas evolution...Ch. 7 - Complete and balance each gas evolution reaction....Ch. 7 - Which reactions are redox reactions? a....Ch. 7 - Which reactions are redox reactions? a....Ch. 7 - Prob. 85ECh. 7 - 86. Complete and balance each combustion...Ch. 7 - 87. Write a balanced chemical equation for the...Ch. 7 - Write a balanced chemical equation for the...Ch. 7 - 89. Classify each chemical reaction as a...Ch. 7 - 90. Classify each chemical reaction as a...Ch. 7 - Prob. 91ECh. 7 - 92. A main source of soulful oxide pollutants are...Ch. 7 - Predict the products of each reaction and write...Ch. 7 - Predict the products of each reaction and write...Ch. 7 - Prob. 95ECh. 7 - 96. Predict the products of each reaction and...Ch. 7 - Predict the type of reaction (if any) that occurs...Ch. 7 - Prob. 98ECh. 7 - Classify each reaction in as many ways as...Ch. 7 - Classify each reaction in as many ways as...Ch. 7 - Hard water often contains dissolved Ca2+ and Mg2+...Ch. 7 - Lakes that have been acidified by acid rain...Ch. 7 - 103. What solution can you add to each cation...Ch. 7 - Prob. 104ECh. 7 - A solution contains an unknown amount of dissolved...Ch. 7 - Prob. 106ECh. 7 - Prob. 107ECh. 7 - Prob. 108ECh. 7 - 109. Shown here are molecular views of two...Ch. 7 - Precipitation reactions often produce brilliant...Ch. 7 - Prob. 111QGWCh. 7 - Memorize the solubility rules. Without referring...Ch. 7 - Define and give an example of each of the...Ch. 7 - Water samples often contain dissolved ions such as...
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- wrtie the balanced equation and find the E° when the following half- reactions are combined Zn2+(aq) + 2e---> Zn(s) E°= -0.763V Ag+(aq) + e---> Ag (s) E°=+0.799Varrow_forwardConsider this molecule: How many H atoms are in this molecule? How many different signals could be found in its 'H NMR spectrum? Note: A multiplet is considered one signal. ☐arrow_forwardStudy this 'H NMR spectrum, and then answer the questions about it in the table below. Check 1.0- 0.5- 0.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 What unit symbol should be written on the horizontal axis? What is the chemical shift & of the doublet? If there is no doublet, just check the box instead. Give your answer to 2 significant digits. What is the chemical shift of the signal immediately upfield of the doublet? If there is no doublet, or no signal upfield of it, check the box instead. What is the chemical shift & of the least deshielded proton? If you can't tell without more information, check the box instead. 血 8 = ☐ There is no doublet. 8 = ☐ No such signal. 8 = 0 Need more information.arrow_forward
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- Using reaction free energy to predict equilibrium composition Consider the following equilibrium: 2NO2 (g) = N2O4(g) AGº = -5.4 kJ Now suppose a reaction vessel is filled with 4.53 atm of dinitrogen tetroxide (N2O4) at 279. °C. Answer the following questions about this system: Under these conditions, will the pressure of N2O4 tend to rise or fall? Is it possible to reverse this tendency by adding NO2? In other words, if you said the pressure of N2O4 will tend to rise, can that be changed to a tendency to fall by adding NO2? Similarly, if you said the pressure of N2O4 will tend to fall, can that be changed to a tendency to '2' rise by adding NO2? If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO 2 needed to reverse it. Round your answer to 2 significant digits. 00 rise ☐ x10 fall yes no ☐ atm G Ar 1arrow_forwardWhy do we analyse salt?arrow_forwardCurved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s). Be sure to account for all bond-breaking and bond-making steps. H H CH3OH, H+ H Select to Add Arrows H° 0:0 'H + Q HH ■ Select to Add Arrows CH3OH, H* H. H CH3OH, H+ HH ■ Select to Add Arrows i Please select a drawing or reagent from the question areaarrow_forward
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