EP ORGANIC CHEMISTRY,24 MONTH-OWLV2
9th Edition
ISBN: 9781305084391
Author: McMurry
Publisher: CENGAGE L
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Chapter 2.SE, Problem 50AP
Calculate pKa values from the following Ka’s:
(a) Nitromethane, Ka=5.0Ă—10-11
(b) Acrylic acid, Ka=5.6Ă—10-5
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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
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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
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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 2 Solutions
EP ORGANIC CHEMISTRY,24 MONTH-OWLV2
Ch. 2.1 - Prob. 1PCh. 2.1 - Prob. 2PCh. 2.1 - Use the electronegativity values shown in Figure...Ch. 2.1 - Look at the following electrostatic potential map...Ch. 2.2 - Ethylene glycol, HOCH2CH2OH, may look nonpolar...Ch. 2.2 - Make three-dimensional drawings of the following...Ch. 2.3 - Calculate formal charges for the nonhydrogen atoms...Ch. 2.3 - Organic phosphate groups occur commonly in...Ch. 2.6 - Which of the following pairs of structures...Ch. 2.6 - Draw the indicated number of resonance forms for...
Ch. 2.7 - Nitric acid (HNO3) reacts with ammonia (NH3) to...Ch. 2.8 - Prob. 12PCh. 2.8 - Amide ion, H2N-, is a much stronger base than...Ch. 2.9 - Prob. 14PCh. 2.9 - Prob. 15PCh. 2.9 - Prob. 16PCh. 2.11 - Using curved arrows, show how the species in part...Ch. 2.11 - Prob. 18PCh. 2.12 - Of the two vitamins A and C, one is hydrophilic...Ch. 2.SE - Prob. 20VCCh. 2.SE - The following model is a representation of...Ch. 2.SE - cis-l, 2-Dichloroethylene and trans-1,...Ch. 2.SE - The following molecular models are representations...Ch. 2.SE - Predict the product(s) of the acid/base reactions...Ch. 2.SE - Use curved arrows to draw the protonated form of...Ch. 2.SE - Prob. 26MPCh. 2.SE - Double bonds can also act like Lewis bases,...Ch. 2.SE - Prob. 28APCh. 2.SE - Use the electronegativity table given in Figure...Ch. 2.SE - Which of the following molecules has a dipole...Ch. 2.SE - Prob. 31APCh. 2.SE - Phosgene, C12C=O, has a smaller dipole moment than...Ch. 2.SE - Prob. 33APCh. 2.SE - Methanethiol, CH3SH, has a substantial dipole...Ch. 2.SE - Calculate the formal charges on the atoms shown in...Ch. 2.SE - Assign formal charges to the atoms in each of the...Ch. 2.SE - Which of the following pairs of structures...Ch. 2.SE - Prob. 38APCh. 2.SE - 1, 3-Cyclobutadiene is a rectangular molecule with...Ch. 2.SE - Alcohols can act either as weak acids or as weak...Ch. 2.SE - The O-H hydrogen in acetic acid is more acidic...Ch. 2.SE - Draw electron-dot structures for the following...Ch. 2.SE - Write the products of the following acid-base...Ch. 2.SE - Rank the following substances in order of...Ch. 2.SE - Which, if any, of the substances in Problem 2-44...Ch. 2.SE - The ammonium ion (NH4+, pKa = 9.25) has a lower...Ch. 2.SE - Prob. 47APCh. 2.SE - Prob. 48APCh. 2.SE - Calculate Ka values from the following pka’s:...Ch. 2.SE - Calculate pKa values from the following Ka’s:...Ch. 2.SE - What is the pH of a 0.050 M solution of formic...Ch. 2.SE - Prob. 52APCh. 2.SE - Maleic acid has a dipole moment, but the closely...Ch. 2.SE - Assume that you have two unlabeled bottles, one of...Ch. 2.SE - Identify the acids and bases in the following...Ch. 2.SE - Which of the following pairs represent resonance...Ch. 2.SE - Draw as many resonance structures as you can for...Ch. 2.SE - Carbocations, which contain a trivalent,...Ch. 2.SE - We’ll see in the next chapter that organic...Ch. 2.SE - The azide functional group, which occurs in...Ch. 2.SE - Phenol, C6H5OH, is a stronger acid than methanol,...Ch. 2.SE - Thiamin diphosphate (TPP), a derivative of vitamin...Ch. 2.SE - Determine if each compound or ion below has a...Ch. 2.SE - Prob. 64APCh. 2.SE - Prob. 65APCh. 2.SE - Draw the conjugate base for each compound below...Ch. 2.SE - 1, 1, 1-Trichloroethanol is an acid more than 1000...
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