General Chemistry: Atoms First
2nd Edition
ISBN: 9780321809261
Author: John E. McMurry, Robert C. Fay
Publisher: Prentice Hall
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Textbook Question
Chapter 7.3, Problem 7.4P
Write net ionic equations for the following reactions:
- (a) 2 AgNO3(aq) + Na2CrO4(aq)
- (b) H2SO4(aq) + MgCO3(s)
- (c) Hg(NO3)2(aq) + 2 NH4I(aq)
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Students have asked these similar questions
On the next page is an LC separation of the parabens found in baby wash. Parabens are
suspected in a link to breast cancer therefore an accurate way to quantitate them is desired.
a. In the chromatogram, estimate k' for ethyl paraben. Clearly indicate what values you used for
all the terms in your calculation.
b. Is this a "good" value for a capacity factor? Explain.
c. What is the resolution between n-Propyl paraben and n-Butyl paraben? Again, indicate clearly
what values you used in your calculation.
MAU
| Methyl paraben
40
20
0
-2
Ethyl paraben n-Propyl paraben
n-Butyl paraben
App ID 22925
6
8
min
d. In Figure 4, each stationary phase shows some negative correlation between plate count
and retention factor. In other words, as k' increases, N decreases. Explain this relationship
between k' and N.
Plate Count (N)
4000
3500
2500
2000
1500
1000
Figure 4. Column efficiency (N) vs retention factor (k') for 22
nonionizable solutes on FMS (red), PGC (black), and COZ (green). 3000
Eluent compositions (acetonitrile/water, A/W) were adjusted to obtain
k' less than 15, which was achieved for most solutes as follows: FMS
(30/70 A/W), PGC (60/40), COZ (80/20). Slightly different
compositions were used for the most highly retained solutes. All
columns were 50 mm × 4.6 mm id and packed with 5 um particles,
except for COZ, which was packed with 3 um particles. All other
chromatographic conditions were constant: column length 5 cm,
column j.§. 4.6 mm, flow rate 2 mL/min, column temperature 40 °C,
and injection volume 0.5 μL
Log(k'x/K'ethylbenzene)
FMS
1.5
1.0
0.5
0.0
ཐྭ ཋ ཤྩ བྷྲ ;
500
0
5
10…
f. Predict how the van Deemter curve in Figure 7
would change if the temperature were raised
from 40 °C to 55 °C.
Figure 7. van Desmter curves in reduced coordinates for four
nitroalkane homologues (nitropropane, black; nitrobutane, red;
nitropentane, blue; and nitrohexane, green) separated on the FMS
phase. Chromatographic conditions: column dimensions 50 mm × 4.6
mm id, eluent 30/70 ACN/water, flow rates 0.2-5.0 mL/min, injection
volume 0.5 and column temperature 40 °C. No corrections to the
plate heights have been made to account for extracolumn dispersion.
Reduced Plate Height (h)
°
20
40
60
Reduced Velocity (v)
8. (2) A water sample is analyzed for traces of benzene using headspace analysis. The sample and
standard are spiked with a fixed amount of toluene as an internal standard. The following data are
obtained:
Ppb benzene
Peak area benzene
Peak area toluene
10.0
252
376
Sample
533
368
What is the concentration of benzene in the sample?
Chapter 7 Solutions
General Chemistry: Atoms First
Ch. 7.1 - What is the molar concentration of Br ions in a...Ch. 7.1 - Three different substances, A2X, A2Y, and A2Z, are...Ch. 7.2 - Prob. 7.3PCh. 7.3 - Write net ionic equations for the following...Ch. 7.4 - Predict whether each of the following compounds is...Ch. 7.4 - Predict whether a precipitation reaction will...Ch. 7.4 - How might you use a precipitation reaction to...Ch. 7.4 - An aqueous solution containing an anion,...Ch. 7.5 - Prob. 7.9PCh. 7.5 - Give likely chemical formulas corresponding to the...
Ch. 7.5 - Write a balanced ionic equation and net ionic...Ch. 7.5 - The following pictures represent aqueous solutions...Ch. 7.6 - Assign an oxidation number to each atom in the...Ch. 7.7 - Prob. 7.14PCh. 7.7 - In each of the following reactions, tell which...Ch. 7.8 - Predict whether the following reactions will...Ch. 7.8 - Element B will reduce the cation of element A (A+)...Ch. 7.8 - Use the following reactions to arrange the...Ch. 7.9 - Write unbalanced half-reactions for the following...Ch. 7.9 - Balance the following net ionic equation by the...Ch. 7.9 - Balance the following equation by the...Ch. 7.10 - What is the molar concentration of Fe2+ ion in an...Ch. 7.10 - In the common lead storage battery used in...Ch. 7.10 - Many dozens of different solvents are used in...Ch. 7 - Prob. 7.25CPCh. 7 - Assume that an aqueous solution of a cation,...Ch. 7 - Assume that an aqueous solution of OH, represented...Ch. 7 - Prob. 7.28CPCh. 7 - Prob. 7.29CPCh. 7 - Prob. 7.30CPCh. 7 - Prob. 7.31CPCh. 7 - Prob. 7.32SPCh. 7 - Prob. 7.33SPCh. 7 - Write net ionic equations for the reactions listed...Ch. 7 - Prob. 7.35SPCh. 7 - Prob. 7.36SPCh. 7 - Prob. 7.37SPCh. 7 - Prob. 7.38SPCh. 7 - Prob. 7.39SPCh. 7 - Classify each of the following substances as...Ch. 7 - Prob. 7.41SPCh. 7 - What is the total molar concentration of ions in...Ch. 7 - What is the total molar concentration of ions in...Ch. 7 - Which of the following substances are likely to be...Ch. 7 - Which of the following substances are likely to be...Ch. 7 - Predict whether a precipitation reaction will...Ch. 7 - Predict whether a precipitation reaction will...Ch. 7 - Prob. 7.48SPCh. 7 - Prob. 7.49SPCh. 7 - Prob. 7.50SPCh. 7 - How would you prepare the following substances by...Ch. 7 - What is the mass and the identity of the...Ch. 7 - What is the mass and the identity of the...Ch. 7 - Prob. 7.54SPCh. 7 - Prob. 7.55SPCh. 7 - Prob. 7.56SPCh. 7 - Assume that you have an aqueous solution of an...Ch. 7 - Prob. 7.58SPCh. 7 - Prob. 7.59SPCh. 7 - Prob. 7.60SPCh. 7 - Write balanced ionic equations for the following...Ch. 7 - Write balanced net ionic equations for the...Ch. 7 - Prob. 7.63SPCh. 7 - If the following solutions are mixed, is the...Ch. 7 - Prob. 7.65SPCh. 7 - How many milliliters of 1.00 M KOH must be added...Ch. 7 - How many milliliters of 2.00 M HCl must be added...Ch. 7 - Where in the periodic table are the best reducing...Ch. 7 - Prob. 7.69SPCh. 7 - In each of the following instances, tell whether...Ch. 7 - Prob. 7.71SPCh. 7 - Prob. 7.72SPCh. 7 - Prob. 7.73SPCh. 7 - Prob. 7.74SPCh. 7 - Prob. 7.75SPCh. 7 - Prob. 7.76SPCh. 7 - Prob. 7.77SPCh. 7 - Prob. 7.78SPCh. 7 - Neither strontium (Sr) nor antimony (Sb) is shown...Ch. 7 - Prob. 7.80SPCh. 7 - Prob. 7.81SPCh. 7 - Prob. 7.82SPCh. 7 - Prob. 7.83SPCh. 7 - Prob. 7.84SPCh. 7 - Balance the half-reactions in Problem 7.83,...Ch. 7 - Prob. 7.86SPCh. 7 - Prob. 7.87SPCh. 7 - Balance the following half-reactions: (a) (acidic)...Ch. 7 - Prob. 7.89SPCh. 7 - Write balanced net ionic equations for the...Ch. 7 - Write balanced net ionic equations for the...Ch. 7 - Write balanced net ionic equations for the...Ch. 7 - Prob. 7.93SPCh. 7 - Prob. 7.94SPCh. 7 - Prob. 7.95SPCh. 7 - Prob. 7.96SPCh. 7 - Prob. 7.97SPCh. 7 - Prob. 7.98SPCh. 7 - Standardized solutions of KBrO3 are frequently...Ch. 7 - Prob. 7.100SPCh. 7 - Prob. 7.101SPCh. 7 - Prob. 7.102SPCh. 7 - Calcium levels in blood can be determined by...Ch. 7 - Balance the equations for the following reactions...Ch. 7 - Prob. 7.105CHPCh. 7 - Prob. 7.106CHPCh. 7 - Balance the equations for the following reactions...Ch. 7 - Prob. 7.108CHPCh. 7 - Prob. 7.109CHPCh. 7 - Prob. 7.110CHPCh. 7 - Prob. 7.111CHPCh. 7 - Prob. 7.112CHPCh. 7 - Succinic acid, an intermediate in the metabolism...Ch. 7 - How could you use a precipitation reaction to...Ch. 7 - How could you use a precipitation reaction to...Ch. 7 - Write a balanced net ionic equation for each of...Ch. 7 - A 100.0 mL solution containing aqueous HCl and HBr...Ch. 7 - Write balanced net ionic equations for the...Ch. 7 - Prob. 7.119CHPCh. 7 - Prob. 7.120CHPCh. 7 - When 75.0 mL of a 0.100 M lead(II) nitrate...Ch. 7 - Prob. 7.122CHPCh. 7 - Prob. 7.123CHPCh. 7 - Hydrogen peroxide can be either an oxidizing or...Ch. 7 - Prob. 7.125CHPCh. 7 - Iron content in ores can be determined by a redox...Ch. 7 - A mixture of FeCl2 and NaCl is dissolved in water,...Ch. 7 - Prob. 7.128MPCh. 7 - The following three solutions are mixed: 100.0 mL...Ch. 7 - Prob. 7.130MPCh. 7 - Prob. 7.131MPCh. 7 - Prob. 7.132MPCh. 7 - Prob. 7.133MPCh. 7 - Brass is an approximately 4:1 alloy of copper and...Ch. 7 - Prob. 7.135MPCh. 7 - Prob. 7.136MP
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