General, Organic, and Biological Chemistry
7th Edition
ISBN: 9781285853918
Author: H. Stephen Stoker
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 7, Problem 7.11EP
(a)
Interpretation Introduction
Interpretation:
The conversion of the given pressure value of 555mm Hg into atmosphere pressure has to be specified.
(b)
Interpretation Introduction
Interpretation:
The conversion of the given pressure value of 32.0 psi into atmosphere pressure has to be specified.
(c)
Interpretation Introduction
Interpretation:
The conversion of the given pressure value of 675 torr into atmosphere pressure has to be specified.
(d)
Interpretation Introduction
Interpretation:
The conversion of the given pressure value of 75.2 mm Hg into atmosphere pressure has to be specified.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A cylinder contains 12 L of water vapour at 150˚C and 5 atm. The temperature of the water vapour is raised to 175˚C, and the volume of the cylinder is reduced to 8.5 L. What is the final pressure of the gas in atmospheres?
assume that the gas is ideal
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…
Chapter 7 Solutions
General, Organic, and Biological Chemistry
Ch. 7.1 - Prob. 1QQCh. 7.1 - Prob. 2QQCh. 7.1 - Prob. 3QQCh. 7.2 - Prob. 1QQCh. 7.2 - Prob. 2QQCh. 7.2 - Prob. 3QQCh. 7.3 - Prob. 1QQCh. 7.3 - Prob. 2QQCh. 7.3 - Prob. 3QQCh. 7.4 - Prob. 1QQ
Ch. 7.4 - Prob. 2QQCh. 7.4 - Based on Boyles law, if the pressure on 30.0 mL of...Ch. 7.5 - Prob. 1QQCh. 7.5 - Prob. 2QQCh. 7.5 - Prob. 3QQCh. 7.6 - Prob. 1QQCh. 7.6 - Prob. 2QQCh. 7.6 - Prob. 3QQCh. 7.7 - Prob. 1QQCh. 7.7 - Prob. 2QQCh. 7.7 - Prob. 3QQCh. 7.7 - Prob. 4QQCh. 7.8 - Prob. 1QQCh. 7.8 - Prob. 2QQCh. 7.8 - Prob. 3QQCh. 7.9 - Prob. 1QQCh. 7.9 - Prob. 2QQCh. 7.9 - Prob. 3QQCh. 7.10 - Prob. 1QQCh. 7.10 - Prob. 2QQCh. 7.10 - Prob. 3QQCh. 7.11 - Prob. 1QQCh. 7.11 - Prob. 2QQCh. 7.11 - Prob. 3QQCh. 7.11 - Prob. 4QQCh. 7.11 - Prob. 5QQCh. 7.11 - Prob. 6QQCh. 7.12 - Prob. 1QQCh. 7.12 - Prob. 2QQCh. 7.12 - Prob. 3QQCh. 7.13 - Prob. 1QQCh. 7.13 - Prob. 2QQCh. 7.13 - Prob. 3QQCh. 7.13 - Prob. 4QQCh. 7.13 - Prob. 5QQCh. 7.13 - Prob. 6QQCh. 7 - Indicate whether each of the following statements...Ch. 7 - Indicate whether each of the following statements...Ch. 7 - Prob. 7.3EPCh. 7 - Prob. 7.4EPCh. 7 - Prob. 7.5EPCh. 7 - Prob. 7.6EPCh. 7 - Prob. 7.7EPCh. 7 - Prob. 7.8EPCh. 7 - Prob. 7.9EPCh. 7 - Prob. 7.10EPCh. 7 - Prob. 7.11EPCh. 7 - Prob. 7.12EPCh. 7 - Prob. 7.13EPCh. 7 - Prob. 7.14EPCh. 7 - Prob. 7.15EPCh. 7 - Prob. 7.16EPCh. 7 - Prob. 7.17EPCh. 7 - Prob. 7.18EPCh. 7 - A sample of ammonia (NH3), a colorless gas with a...Ch. 7 - A sample of nitrogen dioxide (NO2), a toxic gas...Ch. 7 - Prob. 7.21EPCh. 7 - Prob. 7.22EPCh. 7 - Prob. 7.23EPCh. 7 - Prob. 7.24EPCh. 7 - Prob. 7.25EPCh. 7 - Prob. 7.26EPCh. 7 - A sample of N2 gas occupies a volume of 375 mL at...Ch. 7 - A sample of Ar gas occupies a volume of 1.2 L at...Ch. 7 - Prob. 7.29EPCh. 7 - Prob. 7.30EPCh. 7 - Prob. 7.31EPCh. 7 - Prob. 7.32EPCh. 7 - Prob. 7.33EPCh. 7 - Prob. 7.34EPCh. 7 - Prob. 7.35EPCh. 7 - Prob. 7.36EPCh. 7 - Prob. 7.37EPCh. 7 - Prob. 7.38EPCh. 7 - Prob. 7.39EPCh. 7 - Prob. 7.40EPCh. 7 - Prob. 7.41EPCh. 7 - Prob. 7.42EPCh. 7 - Prob. 7.43EPCh. 7 - Prob. 7.44EPCh. 7 - Prob. 7.45EPCh. 7 - Prob. 7.46EPCh. 7 - Prob. 7.47EPCh. 7 - Prob. 7.48EPCh. 7 - Prob. 7.49EPCh. 7 - Prob. 7.50EPCh. 7 - Determine the following for a 0.250-mole sample of...Ch. 7 - Determine the following for a 0.500-mole sample of...Ch. 7 - Prob. 7.53EPCh. 7 - Prob. 7.54EPCh. 7 - Prob. 7.55EPCh. 7 - What is the value of the ideal gas constant R if...Ch. 7 - The total pressure exerted by a mixture of O2, N2,...Ch. 7 - The total pressure exerted by a mixture of He, Ne,...Ch. 7 - A gas mixture contains O2, N2, and Ar at partial...Ch. 7 - A gas mixture contains He, Ne, and H2S at partial...Ch. 7 - Prob. 7.61EPCh. 7 - Prob. 7.62EPCh. 7 - Prob. 7.63EPCh. 7 - Prob. 7.64EPCh. 7 - Prob. 7.65EPCh. 7 - Prob. 7.66EPCh. 7 - Prob. 7.67EPCh. 7 - Prob. 7.68EPCh. 7 - Prob. 7.69EPCh. 7 - Prob. 7.70EPCh. 7 - Prob. 7.71EPCh. 7 - Prob. 7.72EPCh. 7 - What are the two ways in which the escape of...Ch. 7 - Prob. 7.74EPCh. 7 - Prob. 7.75EPCh. 7 - How does an increase in the surface area of a...Ch. 7 - Prob. 7.77EPCh. 7 - Prob. 7.78EPCh. 7 - Prob. 7.79EPCh. 7 - Prob. 7.80EPCh. 7 - Prob. 7.81EPCh. 7 - What is the relationship between the strength of...Ch. 7 - What term is used to describe a substance that...Ch. 7 - Prob. 7.84EPCh. 7 - Indicate whether each of the following statements...Ch. 7 - Indicate whether each of the following statements...Ch. 7 - Prob. 7.87EPCh. 7 - What is the relationship between location...Ch. 7 - Prob. 7.89EPCh. 7 - Prob. 7.90EPCh. 7 - Indicate whether or not each of the following...Ch. 7 - Prob. 7.92EPCh. 7 - Prob. 7.93EPCh. 7 - Prob. 7.94EPCh. 7 - For liquid-state samples of the following diatomic...Ch. 7 - For liquid-state samples of the following diatomic...Ch. 7 - Prob. 7.97EPCh. 7 - Prob. 7.98EPCh. 7 - Prob. 7.99EPCh. 7 - Prob. 7.100EPCh. 7 - Prob. 7.101EPCh. 7 - Prob. 7.102EPCh. 7 - Prob. 7.103EPCh. 7 - Prob. 7.104EPCh. 7 - Prob. 7.105EPCh. 7 - Prob. 7.106EP
Knowledge Booster
Similar questions
- 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?arrow_forwardLiquid chromatography has been used to track the concentration of remdesivir (a broad-spectrum antiviral drug, structure shown at right) in COVID patients undergoing experimental treatments. Intensity The authors provide the following details regarding standard solutions preparation: HN CN HO OH NH2 Remdesivir (RDV) stock solution (5000 µg/mL) was prepared by dissolving RDV drug powder using the mixture of DMSO: MeOH (30:70 v/v). The RDV working standard solutions for calibration and quality controls were prepared using methanol in concentrations of 100, 10, 1, 0.1, 0.01 µg/mL. 1, 2.5, 5, 7.5, 10, 25, 50, 75, 100, 250, 500, 1000, and 5000 ng/mL sample solutions were prepared freshly by spiking calibration standard solutions into the blank human plasma samples for method calibration. a) What type of calibration method is being described? Why do you think the authors chose this method as opposed to another? b) Based on the details provided in part a, describe an appropriate method blank…arrow_forwardRecent advancements in liquid chromatography include the development of ultrahigh pressure liquid chromatography (UHPLC) and an increased use of capillary columns that had previously only been used with gas chromatography. Both of these advances have made the development of portable LC systems possible. For example, Axcend Corp. makes a portable system that uses a capillary column with an internal diameter of 150-μm-that is packed with 1.7-um stationary phase particles. In contrast, a traditional LC column has a 4.6 mm internal diameter and utilizes 5-um stationary phase particles. a) Explain one advantage that is afforded by the use of a capillary column in liquid chromatographic separation. Explain one disadvantage of capillary columns. b) Explain how the use of smaller stationary phase particles can improve the resolution of a separation. Include any relevant equations that support your explanation. c) A scientist at Rowan University is using the Axcend LC to conduct analyses of F…arrow_forward
- This paper describes the use of fullerene molecules, also known as buckyballs, as a stationary phase for liquid chromatography. The performance of the fullerene-modified stationary phase (FMS) is compared to that of a more common C18 stationary phase and to two other carbon-based stationary phases, PGC and COZ. A. 10A OM B. - Figure 1. Idealized drawing of the cross-section of a pore inside a silica particle, showing the relative densities of aminopropylsilyl (red/green) and fullerene (blue) groups: (A) full cross- section; (B) detailed view of covalent bonding of fullerene to the silica surface. Surface densities of silyl and fullerene groups were inferred from elemental composition results obtained at each stage of the synthesis (see Table 1). Absorbance (mAU, 220 nm) 700 600 500 400 300 200 100 a. Define selectivity, a, with words and an equation. b. Explain how the choice of stationary phase affects selectivity. c. Calculate the resolution of the nitrobenzene and toluene peaks in…arrow_forwardNormalized Intensity (a. u.) 0.5 1.0 A 3D-printed GC column (shown below) was created for use with "micro" gas chromatography applications. To prove its utility, it was used to separate a mixture of alkanes (C9-C18, C22, C24). For the separation shown below, the column temperature was ramped from 40 °C to 250 °C at a rate of 30 °C per minute. (a) 9 10 = 1 mm 12 13 15 22 0.0 0 100 200 300 400 Time (sec) a) What detector would you use for this analysis? Justify your selection. b) Explain how the chromatogram would change if the separation was run isothermally. c) Explain how the chromatogram would change if the temperature ramp were increased to 50 °C per minute.arrow_forwardDevise a synthesis of each compound from the indicated starting material. You may also use any organic compounds with one or two carbons and any needed inorganic reagents. a. Brarrow_forward
- Please help me with #2b & #3 using the data.arrow_forwardHeparin is used as an anti-coagulant. A risk of heparin use is thrombocytopenia, or low platelet count. This risk is minimized with the use of low molecular weight heparins (LMWH), therefore it is desirable to separate LMWH from higher molecular weight heparins. The method of choice to do this is molecular exclusion chromatography. Below is a chromatogram from a molecular exclusion chromatographic run. Peaks ranging from A to J are clearly distinguishable. The heparin mixture that was analyzed had anywhere from 6 to 30 repeat units of monomer (where the heparin with 30 repeat units would be roughly five times the size of the heparin with six repeat units). a. Which letter most likely represents the peak with 6 repeat units given these heparin polymers were separated with molecular exclusion chromatography? b. Explain your reasoning describing the mechanism of retention in molecular exclusion chromatography. 100 80 60 60 Relative Abundance 40 40 E GH 20 20 B A 36 38 40 42 44 46 48 50 50…arrow_forwardHELP NOW PLEASE ! URGENT!arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax
Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
Chemistry: Matter and Change
Chemistry
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Glencoe/McGraw-Hill School Pub Co
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:OpenStax
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning