Chemistry for Engineering Students
4th Edition
ISBN: 9781337398909
Author: Lawrence S. Brown, Tom Holme
Publisher: Cengage Learning
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Textbook Question
Chapter 11, Problem 11.45PAE
The initial concentration of the reactant in a tirst-order reaction A —» products is 0.64 rnol/L and the half-life is 30.0 s.
- Calculate the concentration of the reactant exactly 60 s after initiation of the reaction.
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(a) The following synthesis of the molecule shown in the circle has a major problem. What is this problem? (2
pts)
1) HBr
(no peroxides)
2) H-
NaNH2
Br
3) NaNH,
4) CH3Br
5) H2, Pd
(b) Starting with the molecule shown below and any other materials with two carbons or less, write out an
alternate synthesis of the circled molecule. More than one step is needed. Indicate the reagent(s) and the major
product in all the steps in your synthesis. (5 pts)
2024 Fall Term (1) Organic Chemistry 1 (Lec)
CHEM 22204 02[6386] (Hunter College)
(c) Using the same starting material as in part (b) and any other materials win two carpons or less, write out
syntheses of the circled molecules shown below. More than one step is needed in each case. Indicate the
reagent(s) and the major product in all the steps in your synthesis. You may use reactions and products from
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alt
ons for
Free Response Questions
FRQ 1:
0/5
To spectrophotometrically determine the mass percent of cobalt in an ore containing cobalt and
some inert materials, solutions with known [Co?) are prepared and absorbance of each of the
solutions is measured at the wavelength of optimum absorbance. The data are used to create a
calibration plot, shown below.
0.90-
0.80-
0.70
0.60
0.50
0.40-
0.30
0.20-
0.10-
0.00-
0.005
0.010
Concentration (M)
0.015
A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted
with water to a final volume of 50.00 ml. Assume that all the cobalt in the ore sample is converted to
Co2+(aq).
a. What is the [Co2] in the solution if the absorbance of a sample of the solution is 0.74?
13
✗
b. Calculate the number of moles of Co2+(aq) in the 50.00 mL solution.
0.008 mols Co
Please correct answer and don't used hand raiting
Chapter 11 Solutions
Chemistry for Engineering Students
Ch. 11 - Prob. 1COCh. 11 - . define the rate of a chemical reaction and...Ch. 11 - Prob. 3COCh. 11 - Prob. 4COCh. 11 - . explain the difference between elementary...Ch. 11 - . find the rate law predicted for a particular...Ch. 11 - . use a molecular perspective to explain the...Ch. 11 - Prob. 8COCh. 11 - . explain the role of a catalyst in the design of...Ch. 11 - Prob. 11.1PAE
Ch. 11 - List two types of chemical compounds that must be...Ch. 11 - Prob. 11.3PAECh. 11 - Prob. 11.4PAECh. 11 - Prob. 11.5PAECh. 11 - Prob. 11.6PAECh. 11 - Asphalt is composed of a mixture of organic...Ch. 11 - Prob. 11.8PAECh. 11 - Prob. 11.9PAECh. 11 - For each of the following, suggest appropriate...Ch. 11 - Prob. 11.11PAECh. 11 - Rank the following in order of increasing reaction...Ch. 11 - Prob. 11.13PAECh. 11 - Candle wax is a mixture of hydrocarbons. In the...Ch. 11 - Prob. 11.15PAECh. 11 - The reaction for the Haber process, the industrial...Ch. 11 - 11.17 Ammonia can react with oxygen to produce...Ch. 11 - The following data were obtained in the...Ch. 11 - Prob. 11.19PAECh. 11 - Experimental data are listed here for the reaction...Ch. 11 - Azomethane, CH3NNCH3, is not a stable compound,...Ch. 11 - Prob. 11.22PAECh. 11 - A reaction has the experimental rate equation Rate...Ch. 11 - Second-order rate constants used in modeling...Ch. 11 - For each of the rate laws below, what is the order...Ch. 11 - 11.26 The reaction of C(Xg) with NO2(g) is second...Ch. 11 - Prob. 11.27PAECh. 11 - Prob. 11.28PAECh. 11 - The hypothetical reaction, A + B —*C, has the rate...Ch. 11 - The rate of the decomposition of hydrogen...Ch. 11 - Prob. 11.31PAECh. 11 - 11.32 The following experimental data were...Ch. 11 - The following experimental data were obtained for...Ch. 11 - 11.34 Rate data were obtained at 25°C for the...Ch. 11 - 11.35 For the reaction 2 NO(g) + 2 H?(g) — N,(g) +...Ch. 11 - The reaction NO(g) + O,(g) — NO,(g) + 0(g) plays a...Ch. 11 - Prob. 11.37PAECh. 11 - Prob. 11.38PAECh. 11 - The decomposition of N2O5 in solution in carbon...Ch. 11 - In Exercise 11.39, if the initial concentration of...Ch. 11 - 11.41 For a drug to be effective in treating an...Ch. 11 - Amoxicillin is an antibiotic packaged as a powder....Ch. 11 - As with any drug, aspirin (acetylsalicylic acid)...Ch. 11 - 11.44 A possible reaction for the degradation of...Ch. 11 - The initial concentration of the reactant in a...Ch. 11 - A substance undergoes first-order decomposition....Ch. 11 - Prob. 11.47PAECh. 11 - 11.48 The following data were collected for the...Ch. 11 - The rate of photodecomposition of the herbicide...Ch. 11 - Prob. 11.50PAECh. 11 - 11.51 Peroxyacetyl nitrate (PAN) has the chemical...Ch. 11 - Hydrogen peroxide (H20i) decomposes into water and...Ch. 11 - 11.53 The reaction in which CO, decomposes to CO...Ch. 11 - use the kineticmolecular theory to explain why an...Ch. 11 - The following rate constants were obtained in an...Ch. 11 - The table below presents measured rate constants...Ch. 11 - Prob. 11.57PAECh. 11 - Prob. 11.58PAECh. 11 - Can a reaction mechanism ever be proven correct?...Ch. 11 - Prob. 11.60PAECh. 11 - Describe how the Chapman cycle is a reaction...Ch. 11 - Prob. 11.62PAECh. 11 - The following mechanism is proposed for a...Ch. 11 - 11.64 HBr is oxidized in the following reaction: 4...Ch. 11 - Prob. 11.65PAECh. 11 - Prob. 11.66PAECh. 11 - What distinguishes homogeneous and heterogeneous...Ch. 11 - Prob. 11.68PAECh. 11 - In Chapter 3, we discussed the conversion of...Ch. 11 - The label on a bottle of 3% (by volume) hydrogen...Ch. 11 - Prob. 11.71PAECh. 11 - Prob. 11.72PAECh. 11 - Prob. 11.73PAECh. 11 - 11.74 The AQI includes six levels, including...Ch. 11 - Prob. 11.75PAECh. 11 - Prob. 11.76PAECh. 11 - Prob. 11.77PAECh. 11 - Prob. 11.78PAECh. 11 - Prob. 11.79PAECh. 11 - Prob. 11.80PAECh. 11 - Prob. 11.81PAECh. 11 - Prob. 11.82PAECh. 11 - Bacteria cause milk to go sour by generating...Ch. 11 - Prob. 11.84PAECh. 11 - Prob. 11.85PAECh. 11 - Prob. 11.86PAECh. 11 - Prob. 11.87PAECh. 11 - Prob. 11.88PAECh. 11 - Prob. 11.89PAECh. 11 - 11.90 Draw a hypothetical activation energy...Ch. 11 - Prob. 11.91PAECh. 11 - Prob. 11.92PAECh. 11 - 11.93 On a particular day, the ozone level in...Ch. 11 - Prob. 11.94PAECh. 11 - The following is a thought experiment. Imagine...Ch. 11 - The following statements relate to the reaction...Ch. 11 - Prob. 11.97PAECh. 11 - Experiments show that the reaction of nitrogen...Ch. 11 - Substances that poison a catalyst pose a major...Ch. 11 - Prob. 11.100PAECh. 11 - Prob. 11.101PAECh. 11 - 11.102 Suppose that you are studying a reaction...Ch. 11 - Prob. 11.103PAECh. 11 - Prob. 11.104PAECh. 11 - Prob. 11.105PAECh. 11 - Prob. 11.106PAECh. 11 - 11.1047 Fluorine often reacts explosively. What...Ch. 11 - Prob. 11.108PAECh. 11 - Prob. 11.109PAECh. 11 - When formic acid is heated, it decomposes to...
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