CHEMISTRY-MASTERINGCHEMISTRY W/ETEXT
8th Edition
ISBN: 9780135204634
Author: Robinson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 7, Problem 7.2A
Conceptual APPLY 7.2 An electrostatic potential map of water is shown below. Which atom, H or O, is positively polarized (electron-poor) and which is negatively polarized (electron-rich)? Is this polarity pattern consistent with the electronegativity values of O and H given in Figure 7.4?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
eks.com/aleksogi/x/sl.exe/1o_u-IgNslkr7j8P3jH-IQs_pBanHhvTCeeBZbufuBYTI0Hz7m7D3ZS17Hd6m-HIl6n52njJN-TXdQA2X9yID-1SWQJTgnjARg30
111
States of Matter
Understanding conceptual components of the enthalpy of solution
0/5
Ge
A small amount of acetonitrile (CH, CN) is dissolved in a large amount of water. Imagine separating this process into the four stages sketched below. (These
sketches show only a portion of the substances, so you can see the density and distribution of atoms and molecules in them.)
CH,CN
H₂O
B
88
C
Use these sketches to answer the questions in the table below.
The enthalpy of solution AH is negative
soln
when CH3CN dissolves in water. Use this
information to list the stages in order of increasing
enthalpy.
Would heat be absorbed or released if the system
moved from Stage C to D?
What force would oppose or favor the system
moving from Stage C to D? Check all that apply.
1
absorbed
O released
neither absorbed nor released.
none
O ionic bonding force
covalent bonding force…
In a system with an anodic overpotential, the variation of ŋ as a function of
the current density:
1. at low fields is linear 2. at higher fields, it follows Tafel's law
Find the range of current densities for which the overpotential has the same
value as when calculated for cases 1 and 2 (maximum relative difference of
5% with respect to the behavior for higher fields). To which overpotential
range does this correspond?
Data: 10 = 1.5 mA cm², T = 300°C, ẞ = 0.64, R = 8.314 J K 1 mol¹ and F = 96485
C mol-1.
Indicate 10.6 with only one significant figure.
Chapter 7 Solutions
CHEMISTRY-MASTERINGCHEMISTRY W/ETEXT
Ch. 7 - Use the electro negativity values in Figure 7.4...Ch. 7 - Conceptual APPLY 7.2 An electrostatic potential...Ch. 7 - The dipole moment of AgCI in the gas phaseis...Ch. 7 - Predict which bond has greater percent ionic...Ch. 7 - Select the correct electron-dot structure for H2S...Ch. 7 - Use the octet rule to predict the molecular...Ch. 7 - Identify the correct electron-dot structure for...Ch. 7 - Draw an electron-dot structure for each of the...Ch. 7 - Select the correct electron-dot structure for...Ch. 7 - Identify the correct electron-dot structure(s) for...
Ch. 7 - Prob. 7.11PCh. 7 - Which oxygen species do you predict to be most...Ch. 7 - Draw an electron-dot structure for the following...Ch. 7 - There are two molecules with the formula C2H6O...Ch. 7 - The following structure is a representation of...Ch. 7 - Draw two possible electron-dot structures for the...Ch. 7 - Called “laughing gas, nitrous oxide (N2O) is...Ch. 7 - Draw as many resonance structures as possible for...Ch. 7 - Prob. 7.19PCh. 7 - Prob. 7.20ACh. 7 - Calculate the formal charge on each atom in the...Ch. 7 - Start with the electron-dot structure for the...Ch. 7 - Calculate formal charges on the C and O atoms in...Ch. 7 - Three resonance structures for anisole (Problem...Ch. 7 - The toxicity of the organophosphate insecticides...Ch. 7 - Prob. 7.26PCh. 7 - Prob. 7.27PCh. 7 - The following structure is a representation of the...Ch. 7 - The electron-dot structure for the nerve a gentsar...Ch. 7 - Draw the new electron-dot structures indicated by...Ch. 7 - The following diagram shows the potential energy...Ch. 7 - The following diagram shows the potential energy...Ch. 7 - Two electrostatic potential maps are shown, one of...Ch. 7 - Prob. 7.34CPCh. 7 - Which of the following drawings is most likely to...Ch. 7 - The following ball-and-stick molecular model is a...Ch. 7 - The following hall-and-stick molecular model is a...Ch. 7 - Sinapaldehyde, a compound present in the toasted...Ch. 7 - Vitamin C (ascorbic acid) has the following...Ch. 7 - Match the following descriptions with the type of...Ch. 7 - Why do two atoms come together to form a covalent...Ch. 7 - Explain the difference in the bond dissociation...Ch. 7 - Explain the difference in the bond dissociation...Ch. 7 - Predict which of the following bonds should be...Ch. 7 - Prob. 7.45SPCh. 7 - What general trends in electro negativity occur in...Ch. 7 - Predict the electro negativity of the undiscovered...Ch. 7 - Order the following elements according to...Ch. 7 - Order the following elements according to...Ch. 7 - Which of the following substances contain bonds...Ch. 7 - Use the electro negativity data in Figure 7.4 to...Ch. 7 - Show the direction of polarity for each of the...Ch. 7 - Show the direction of polarity for each of the...Ch. 7 - Which of the substances...Ch. 7 - Which of the substances...Ch. 7 - Order the following compounds according to the...Ch. 7 - Order the following compounds according to the...Ch. 7 - Prob. 7.58SPCh. 7 - Using only the elements Ca, Cl, and Si, give...Ch. 7 - The dipole moment of BrCl is 0.518 D, and the...Ch. 7 - Prob. 7.61SPCh. 7 - Prob. 7.62SPCh. 7 - Prob. 7.63SPCh. 7 - Why does the octet rule apply primarily to...Ch. 7 - Which of the following substances contains an atom...Ch. 7 - Draw electron-dot structures for the following...Ch. 7 - Draw electron-dot structures for the following...Ch. 7 - Identify the correct electron-dot structure for...Ch. 7 - Draw an electron.dot structure for the hydronium...Ch. 7 - Oxalic acid, H2C2O4 , is a mildly poisonous...Ch. 7 - Draw an electron-dot structure for carbon...Ch. 7 - Prob. 7.72SPCh. 7 - Identify the fourth-row elements, X, that form the...Ch. 7 - Write electron-dot structures for molecules with...Ch. 7 - Write electron-dot structures for molecules with...Ch. 7 - Which compound do you expect to have the stronger...Ch. 7 - Which compound do you expect to have the stronger...Ch. 7 - Draw an electron-dot structure for each of the...Ch. 7 - Prob. 7.79SPCh. 7 - Methylphenidate (C14H19NO2) , marketed as Ritalin,...Ch. 7 - Pregabalin (C8H17NO2) , marketed as Lyric a, is an...Ch. 7 - The following molecular model is that of...Ch. 7 - Ibuprofen C 13 H 18 O 2 marketed under such brand...Ch. 7 - Draw as many resonance structures as you can that...Ch. 7 - Draw as many resonance structures as you can for...Ch. 7 - Which of the following pairs of structures...Ch. 7 - Which of the following pairs of structures...Ch. 7 - Draw as many resonance structures as you can that...Ch. 7 - Draw as many resonance structures as you can that...Ch. 7 - Benzene has the following structural formula. Use...Ch. 7 - Draw three resonance structures for sulfur...Ch. 7 - Some mothballs used when storing clothes are made...Ch. 7 - Four different structures (a), (b), (c), and (d)...Ch. 7 - Draw an electron-dot structure for carbon...Ch. 7 - Assign formal charges to the atoms in the...Ch. 7 - Assign formal charges to the atoms in the...Ch. 7 - Assign formal charges to the atoms in the...Ch. 7 - Assign formal charges to the atoms in the...Ch. 7 - Calculate formal charges for the C and O atoms in...Ch. 7 - Draw two electron-dot resonance structures that...Ch. 7 - Draw two electron-dot resonance structures that...Ch. 7 - Prob. 7.102SPCh. 7 - Prob. 7.103SPCh. 7 - Boron trifluoride reacts with dimethyl ether to...Ch. 7 - Thiofulminic acid, HCNS, has recently been...Ch. 7 - Draw two rcsonancc strutur for methyl isocyanate,...Ch. 7 - In the cyanatc ion. OCN , carbon is the central...Ch. 7 - Prob. 7.108MPCh. 7 - Prob. 7.109MPCh. 7 - Prob. 7.110MPCh. 7 - The neutral OH molecule has been implicated in...Ch. 7 - Prob. 7.112MPCh. 7 - Prob. 7.113MP
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
- If I have 10 data points for variables x and y, when I represent y versus x I obtain a line with the equation y = mx + b. Is the slope m equal to dy/dx?arrow_forwardThe data for the potential difference of a battery and its temperature are given in the table. Calculate the entropy change in J mol-1 K-1 (indicate the formulas used).Data: F = 96485 C mol-1arrow_forwardIn a cell, the change in entropy (AS) can be calculated from the slope of the E° vs 1/T graph. The slope is equal to -AS/R, where R is the gas constant. Is this correct?arrow_forward
- Using the Arrhenius equation, it is possible to establish the relationship between the rate constant (k) of a chemical reaction and the temperature (T), in Kelvin (K), the universal gas constant (R), the pre-exponential factor (A) and the activation energy (Ea). This equation is widely applied in studies of chemical kinetics, and is also widely used to determine the activation energy of reactions. In this context, the following graph shows the variation of the rate constant with the inverse of the absolute temperature, for a given chemical reaction that obeys the Arrhenius equation. Based on the analysis of this graph and the concepts acquired about the kinetics of chemical reactions, analyze the following statements: I. The activation energy (Ea) varies with the temperature of the system. II. The activation energy (Ea) varies with the concentration of the reactants. III. The rate constant (K) varies proportionally with temperature. IV. The value of the…arrow_forwardIn an electrolytic cell, indicate the formula that relates E0 to the temperature T.arrow_forward-- 14:33 A Candidate Identification docs.google.com 11. Compound A can transform into compound B through an organic reaction. From the structures below, mark the correct one: HO A تھے۔ די HO B ○ A) Compounds A and B are isomers. B) Both have the same number of chiral carbons. C) Compound A underwent an addition reaction of Cl2 and H2O to form compound B. D) Compound A underwent a substitution reaction forming the intermediate chlorohydrin to obtain compound B. E) Compound A underwent an addition reaction of Cl2 forming the chloronium ion and then added methanol to obtain compound B. 60arrow_forward
- -- 14:40 A Candidate Identification docs.google.com 13. The compound 1-bromo-hex-2-ene reacts with methanol to form two products. About this reaction, mark the correct statement: OCH3 CH3OH Br OCH3 + + HBr A B A) The two products formed will have the same percentage of formation. B) Product B will be formed by SN1 substitution reaction with the formation of an allylic carbocation. C) Product A will be formed by SN1 substitution reaction with the formation of a more stable carbocation than product B. D) Product A will be formed by an SN2 substitution reaction occurring in two stages, the first with slow kinetics and the second with fast kinetics. E) The two compounds were obtained by addition reaction, with compound B having the highest percentage of formation. 57arrow_forward-- ☑ 14:30 A Candidate Identification docs.google.com 10. Amoxicillin (figure X) is one of the most widely used antibiotics in the penicillin family. The discovery and synthesis of these antibiotics in the 20th century made the treatment of infections that were previously fatal routine. About amoxicillin, mark the correct one: HO NH2 H S -N. HO Figura X. Amoxicilina A) It has the organic functions amide, ester, phenol and amine. B) It has four chiral carbons and 8 stereoisomers. C) The substitution of the aromatic ring is of the ortho-meta type. D) If amoxicillin reacts with an alcohol it can form an ester. E) The structure has two tertiary amides. 62arrow_forwardThe environmental police of a Brazilian state received a report of contamination of a river by inorganic arsenic, due to the excessive use of pesticides on a plantation on the riverbanks. Arsenic (As) is extremely toxic in its many forms and oxidation states. In nature, especially in groundwater, it is found in the form of arsenate (AsO ₄ ³ ⁻ ), which can be electrochemically reduced to As ⁰ and collected at the cathode of a coulometric cell. In this case, Potentiostatic Coulometry (at 25°C) was performed in an alkaline medium (pH = 7.5 throughout the analysis) to quantify the species. What potential (E) should have been selected/applied to perform the analysis, considering that this is an exhaustive electrolysis technique (until 99.99% of all AsO ₄ ³ ⁻ has been reduced to As ⁰ at the electrode, or n( final) = 0.01% n( initial )) and that the concentration of AsO ₄ ³ ⁻ found in the initial sample was 0.15 mmol/L ? Data: AsO ₄ 3 ⁻ (aq) + 2 H ₂ O ( l ) + 2 e ⁻ → A s O ₂ ⁻ ( a…arrow_forward
- -- 14:17 15. Water-soluble proteins are denatured when there is a change in the pH of the environment in which they are found. This occurs due to the protonation and deprotonation of functional groups present in their structure. Choose the option that indicates the chemical bonds modified by pH in the protein represented in the following figure. E CH2 C-OH CH2 H₂C H₁C CH CH3 CH3 CH CH₂-S-S-CH₂- 910 H B -CH2-CH2-CH2-CH₂-NH3* −0—C—CH₂- ○ A) A, C e D. • В) Вес ○ C) DeE ○ D) B, De E ○ E) A, B e C 68arrow_forwardSuppose sodium sulfate has been gradually added to 100 mL of a solution containing calcium ions and strontium ions, both at 0.15 mol/L. Indicate the alternative that presents the percentage of strontium ions that will have precipitated when the calcium sulfate begins to precipitate. Data: Kps of calcium sulfate: 2.4x10 ⁻ ⁵; Kps of strontium sulfate: 3.2x10 ⁻ ⁷ A) 20,2 % B) 36,6 % C) 62,9 % D) 87,5 % E) 98.7%arrow_forward14:43 A Candidate Identification docs.google.com 14. The following diagrams represent hypothetical membrane structures with their components numbered from 1 to 6. Based on the figures and your knowledge of biological membranes, select the correct alternative. | 3 5 || 人 2 500000 6 A) Structures 1, 3, 5, 2 and 4 are present in a constantly fluid arrangement that allows the selectivity of the movement ○ of molecules. Structure 4, present integrally or peripherally, is responsible for this selection, while the quantity of 6 regulates the fluidity. B) The membranes isolate the cell from the environment, but allow the passage of water-soluble molecules thanks to the presence of 2 and 3. The membrane in scheme is more fluid than that in 55arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Introductory Chemistry: A FoundationChemistryISBN:9781285199030Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:9781285199030
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry: An Atoms First Approach
Chemistry
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Cengage Learning
Types of bonds; Author: Edspira;https://www.youtube.com/watch?v=Jj0V01Arebk;License: Standard YouTube License, CC-BY