Introductory Chemistry (6th Edition)
6th Edition
ISBN: 9780134302386
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 9, Problem 9E
Why should excess exposure to ultraviolet light be avoided?
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21.38 Arrange the molecules in each set in order of increasing acidity (from least acidic to
most acidic).
OH
OH
SH
NH2
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NH3
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OH
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OH
(c)
& & &
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21.39 Explain the trends in the acidity of phenol and the monofluoro derivatives of phenol.
OH
OH
OH
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PK 10.0
PK 8.81
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PK 9.81
identify which spectrum is for acetaminophen and which is for phenacetin
The Concept of Aromaticity
21.15 State the number of 2p orbital electrons in each molecule or ion.
(a)
(b)
(e)
(f)
(c)
(d)
(h)
(i)
DA
(k)
21.16 Which of the molecules and ions given in Problem 21.15 are aromatic according to the
Hückel criteria? Which, if planar, would be antiaromatic?
21.17 Which of the following structures are considered aromatic according to the Hückel
criteria?
---0-0
(a)
(b)
(c)
(d)
(e)
(h)
H
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21.18 Which of the molecules and ions from Problem 21.17 have electrons donated by a
heteroatom?
Chapter 9 Solutions
Introductory Chemistry (6th Edition)
Ch. 9 - Q1. Which set of wavelengths for light are...Ch. 9 - Which of the listed types of electromagnetic...Ch. 9 - Q3. Which electron transition in the Bohr model...Ch. 9 - What is the electron configuration of arsenic...Ch. 9 - Which orbital diagram corresponds to phosphorus...Ch. 9 - Q6. How many valence electrons does tellurium (Te)...Ch. 9 - Q7. The element sulfur forms an ion with what...Ch. 9 - Order the elements Sr, Ca, and Se in order of...Ch. 9 - Which of the listed elements has the highest...Ch. 9 - Q10. Which of the listed elements is most...
Ch. 9 - Which property decreases as you move down a column...Ch. 9 - Q12. When aluminum forms an ion, it loses...Ch. 9 - 1. When were the Bohr model the quantum-mechanical...Ch. 9 - 2. What is light? How fast does light travel?
Ch. 9 - 3. What is white light? Colored light?
Ch. 9 - Explain in terms of absorbed and reflected light,...Ch. 9 - What is the relationship between the wavelength of...Ch. 9 - 6. List some sources of gamma rays.
Ch. 9 - How are X-rays used?Ch. 9 - Why should excess exposure to gamma rays and...Ch. 9 - Why should excess exposure to ultraviolet light be...Ch. 9 - What objects emit infrared light? What technology...Ch. 9 - Why do microwave ovens heat food but tend not to...Ch. 9 - 12 .What type of electromagnetic radiation is used...Ch. 9 - Describe the Bohr model for the hydrogen atom.Ch. 9 - 14. What is an emission spectrum? Use the Bohr...Ch. 9 - 15. Explain the difference between a Bohr orbit...Ch. 9 - 16. What is the difference between the ground...Ch. 9 - 17. Explain how the motion of an electron is...Ch. 9 - 18. Why do quantum-mechanical orbital have “fuzzy”...Ch. 9 - 19. List the four possible subshells in the...Ch. 9 - 20. List the quantum-mechanical orbitals through...Ch. 9 - Prob. 21ECh. 9 - Prob. 22ECh. 9 - Within an electron configuration. What do symbols...Ch. 9 - Explain the difference between valence electrons...Ch. 9 - Identify each block in the blank periodic table....Ch. 9 - Prob. 26ECh. 9 - Prob. 27ECh. 9 - Prob. 28ECh. 9 - Prob. 29ECh. 9 - How far does light travel in each time period? a....Ch. 9 - 31. Which type of electromagnetic radiation has...Ch. 9 - 32. Which type of electromagnetic radiation has...Ch. 9 - List the types of electromagnetic radiation in...Ch. 9 - List the types of electromagnetic radiation in...Ch. 9 - List two types of electromagnetic radiation with...Ch. 9 - List two types of electromagnetic radiation with...Ch. 9 - List these three types of radiationinfrared,...Ch. 9 - List these three types of electromagnetic...Ch. 9 - Prob. 39ECh. 9 - 40. In the Bohr model, what happens when an...Ch. 9 - 41. Two of the emission wavelengths in the...Ch. 9 - 42. Two of the emission wavelengths in the...Ch. 9 - 43. Sketch the 1s and 2p orbitals. How do the 2s...Ch. 9 - Sketch the 3d orbitals. How do the 4d orbitals...Ch. 9 - Which electron is, on average closer to the...Ch. 9 - 46. Which electron is, on average, farther from...Ch. 9 - 47. According to the quantum-mechanical model for...Ch. 9 - Prob. 48ECh. 9 - 49. Write full electron configuration for each...Ch. 9 - 50. Write full electron configurations for each...Ch. 9 - 51. Write full orbital diagrams and indicate the...Ch. 9 - Write full orbital diagrams and indicate the...Ch. 9 - Write electron configurations for each element....Ch. 9 - Write electron configurations for each element....Ch. 9 - Prob. 55ECh. 9 - Prob. 56ECh. 9 - Write full electron configurations and indicate...Ch. 9 - 58. Write full electron configurations and...Ch. 9 - Write orbital diagrams for the valence electrons...Ch. 9 - 60. Write orbital diagrams for the valence...Ch. 9 - How many valence electrons are in each element? a....Ch. 9 - 62. How many valence electrons are in each...Ch. 9 - 63. List the outer electron configuration for each...Ch. 9 - Prob. 64ECh. 9 - Prob. 65ECh. 9 - Use the periodic table to write electron...Ch. 9 - Use the periodic table to write electron...Ch. 9 - 68. Use the periodic table to write electron...Ch. 9 - Prob. 69ECh. 9 - How many 3d electrons are in an atom of each...Ch. 9 - Prob. 71ECh. 9 - Prob. 72ECh. 9 - Name the element in the third period (row) of the...Ch. 9 - 74. Name the element in the fourth period of the...Ch. 9 - 75. Use the periodic table to identify the element...Ch. 9 - 76. Use the periodic table to identify the element...Ch. 9 - 77. Choose the element with the higher ionization...Ch. 9 - Choose the element with the higher ionization...Ch. 9 - Arrange the elements in order of increasing...Ch. 9 - 80. Arrange the elements in order of increasing...Ch. 9 - 81. Choose the element with the larger atoms from...Ch. 9 - Choose the element with the larger atoms from each...Ch. 9 - Prob. 83ECh. 9 - Prob. 84ECh. 9 - 85. Choose the more metallic element from each...Ch. 9 - Choose the more metallic element from each pair....Ch. 9 - 87. Arrange these elements in order of increasing...Ch. 9 - Arrange these elements in order of increasing...Ch. 9 - What is the maximum number of electrons that can...Ch. 9 - 90. What is the maximum number of electrons that...Ch. 9 - Use the electron configurations of the alkaline...Ch. 9 - Prob. 92ECh. 9 - Write the electron configuration for each ion....Ch. 9 - Write the electron configuration for each ion....Ch. 9 - Prob. 95ECh. 9 - 96. Examine Figure 4.14, which shows the elements...Ch. 9 - Prob. 97ECh. 9 - Identify what is wrong with each electron...Ch. 9 - Prob. 99ECh. 9 - Prob. 100ECh. 9 - Prob. 101ECh. 9 - Based on periodic trends, which one of these...Ch. 9 - When an electron makes a transition from n=3 to...Ch. 9 - Prob. 104ECh. 9 - The distance from the sun to Earth is 1.496108 km....Ch. 9 - Prob. 106ECh. 9 - 107. The wave nature of matter was first proposed...Ch. 9 - 108. The particle nature of light was first...Ch. 9 - Prob. 109ECh. 9 - When atoms lose more than one electron, the...Ch. 9 - 111. Excessive exposure to sunlight increases the...Ch. 9 - 112. The quantum-mechanical model, besides...Ch. 9 - Prob. 113QGWCh. 9 - 116. Using grammatically correct sentences,...Ch. 9 - 117. The first graph shown here is of the first...
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- 1. Show the steps necessary to make 2-methyl-4-nonene using a Wittig reaction. Start with triphenylphosphine and an alkyl halide. After that you may use any other organic or inorganic reagents. 2. Write in the product of this reaction: CH3 CH₂ (C6H5)₂CuLi H₂O+arrow_forward3. Name this compound properly, including stereochemistry. H₂C H3C CH3 OH 4. Show the step(s) necessary to transform the compound on the left into the acid on the right. Bri CH2 5. Write in the product of this LiAlH4 Br H₂C OHarrow_forwardWhat are the major products of the following reaction? Please provide a detailed explanation and a drawing to show how the reaction proceeds.arrow_forward
- What are the major products of the following enolate alkylation reaction? Please include a detailed explanation as well as a drawing as to how the reaction proceeds.arrow_forwardA block of zinc has an initial temperature of 94.2 degrees celcius and is immererd in 105 g of water at 21.90 degrees celcius. At thermal equilibrium, the final temperature is 25.20 degrees celcius. What is the mass of the zinc block? Cs(Zn) = 0.390 J/gxdegrees celcius Cs(H2O) = 4.18 J/gx degrees celcusarrow_forwardPotential Energy (kJ) 1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. AH = -950 kJ AH = 575 kJ (i) Cl₂ (g) + Pt (s) 2C1 (g) + Pt (s) Ea = 1550 kJ (ii) Cl (g)+ CO (g) + Pt (s) → CICO (g) + Pt (s) (iii) Cl (g) + CICO (g) → Cl₂CO (g) Ea = 2240 kJ Ea = 2350 kJ AH = -825 kJ 2600 2400 2200 2000 1800 1600 1400 1200 1000 a. Draw the potential energy diagram for the reaction. Label the data points for clarity. The potential energy of the reactants is 600 kJ 800 600 400 200 0 -200- -400 -600- -800- Reaction Progressarrow_forward
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