EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
4th Edition
ISBN: 9781119192107
Author: BULLARD
Publisher: JOHN WILEY+SONS,INC.-CONSIGNMENT
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Textbook Question
Chapter 5, Problem 5.25P
Lewis12 describes the hazards of breathing air containing appreciable amounts of an asphyxiant (a gas (hat has no specific toxicity but, when inhaled, excludes oxygen from the lungs). When the mole percent of the asphyxiant in the air reaches 50%, marked symptoms of distress appear, and at 75% death occurs in a matter of minutes.
A small storage room whose dimensions are 2 m × 1.5 m × 3 m contains a number of expensive and dangerous chemicals. To prevent unauthorized entry, the door to the room is always locked and can be opened with a key from either side. A cylinder of liquid carbon dioxide is stored in the room. The valve on the cylinder is faulty and son of the contents have escaped over the weekend. The room temperature is 25°C.
(a) If the concentration of CO2 reaches the lethal 75 mole% level, what would be the mole percent of O2?
(b) How much CO2 (kg) is present in the room when the lethal concentration is reached? Why would more than that amount have to escape from the cylinder for this concentration to be reached?
(c) Describe a set of events that could result in a fatality in the given situation. Suggest at least two measures that would reduce the hazards associated with storage of this seemingly harmless substance.
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Chlorine dioxide gas (ClO2) is used as a commercial bleachingagent. It bleaches materials by oxidizing them. In thecourse of these reactions, the ClO2 is itself reduced. (a)What is the Lewis structure for ClO2? (b) Why do you thinkthat ClO2 is reduced so readily? (c) When a ClO2 moleculegains an electron, the chlorite ion, ClO2-, forms. Draw theLewis structure for ClO2-. (d) Predict the O—Cl—O bondangle in the ClO2- ion. (e) One method of preparing ClO2is by the reaction of chlorine and sodium chlorite:Cl2(g) + 2 NaClO2(s)------>2 ClO2(g) + 2 NaCl(s)If you allow 15.0 g of NaClO2 to react with 2.00 L of chlorinegas at a pressure of 1.50 atm at 21 °C, how many gramsof ClO2 can be prepared?
Each of the following properties shows a regular trend inGroup 1A(1). Predict whether each increases or decreases upthegroup: (a) melting point; (b) E−E bond length; (c) hardness; (d) molar volume; (e) lattice energy of EBr.
18.
(a)
Molecule
N₂H4 (1) + 2 H₂O2 (1) → N2(g) + 4 H₂O (1)
Complete the following table:
Lewis Dot Structure
(use dots or lines
to show bonds)
(b)
(c)
(d)
N₂H4
H₂O2
N₂
H₂O
Calculate the AH°rxn using average bond energies (Table 9.4 in textbook)
Calculate the AH°rxn using the standard enthalpies of formation (Appendix 2 in textbook)
Why are these two values slightly different?
Chapter 5 Solutions
EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
Ch. 5 - A liquid mixture containing 40.0 wt% n-octane and...Ch. 5 - Prob. 5.2PCh. 5 - Prob. 5.3PCh. 5 - Prob. 5.4PCh. 5 - Prob. 5.5PCh. 5 - Prob. 5.6PCh. 5 - Prob. 5.7PCh. 5 - Prob. 5.8PCh. 5 - Prob. 5.9PCh. 5 - Prob. 5.10P
Ch. 5 - Prob. 5.11PCh. 5 - Prob. 5.12PCh. 5 - Prob. 5.13PCh. 5 - Prob. 5.14PCh. 5 - Prob. 5.15PCh. 5 - Prob. 5.16PCh. 5 - Prob. 5.17PCh. 5 - Prob. 5.18PCh. 5 - Prob. 5.19PCh. 5 - A device has been designed to measure the flow...Ch. 5 - Prob. 5.21PCh. 5 - Prob. 5.22PCh. 5 - Spray drying is a process in which a liquid...Ch. 5 - Prob. 5.24PCh. 5 - Lewis12 describes the hazards of breathing air...Ch. 5 - A stream of air at 35°C and a gauge pressure of...Ch. 5 - Prob. 5.27PCh. 5 - In froth ?otation, air is bubbled through an...Ch. 5 - Prob. 5.29PCh. 5 - Prob. 5.30PCh. 5 - Bread is typically made by ?rst dissolving...Ch. 5 - Prob. 5.32PCh. 5 - Prob. 5.33PCh. 5 - Prob. 5.34PCh. 5 - Prob. 5.35PCh. 5 - Prob. 5.36PCh. 5 - Prob. 5.37PCh. 5 - Prob. 5.38PCh. 5 - Prob. 5.39PCh. 5 - A spray-drying operation similar to that described...Ch. 5 - Prob. 5.41PCh. 5 - Fermentation is a biochemical process in which a...Ch. 5 - Prob. 5.43PCh. 5 - Prob. 5.44PCh. 5 - Ethane at 25°C and 1.1 atm (abs) flowing at a rate...Ch. 5 - The ?ow of air to a gas-?red boiler furnace is...Ch. 5 - Prob. 5.47PCh. 5 - The oxidation of nitric oxide NO+12O2NO2 takes...Ch. 5 - Prob. 5.49PCh. 5 - 5.50.19 In chemical vapor deposition (CVD), a...Ch. 5 - A gas turbine power plant receives a shipment of...Ch. 5 - Prob. 5.52PCh. 5 - 5.53.20 Chemicals are stored in a laboratory with...Ch. 5 - Prob. 5.54PCh. 5 - Prob. 5.55PCh. 5 - A stream of ho dry nitrogen flows through a...Ch. 5 - Prob. 5.57PCh. 5 - You have purchased a gas cylinder that is supposed...Ch. 5 - The current global reliance on fossil fuels for...Ch. 5 - Two humid gas streams are combined in a heated...Ch. 5 - Most of the concrete used in the construction of...Ch. 5 - The ultimate analysis of a No. 4 fuel oil is 86.47...Ch. 5 - A stream of liquid n-pentane flows at a rate of...Ch. 5 - Alka-Seltzer( is an over-the-counter medicine used...Ch. 5 - Hydrogen sul?de has the distinctive unpleasant...Ch. 5 - The quantity of sulfuric acid used globally places...Ch. 5 - A small power plant produces 500 MW of electricity...Ch. 5 - You have been assigned the task of measuring the...Ch. 5 - Prob. 5.69PCh. 5 - Methanol is synthesized from carbon monoxide and...Ch. 5 - Prob. 5.71PCh. 5 - Prob. 5.72PCh. 5 - Steam reforming is an important technology for...Ch. 5 - A ?owchart of a methanol synthesis process is...Ch. 5 - The measured volumetric flow rate of ethane at...Ch. 5 - Prob. 5.76PCh. 5 - Methanol is to be delivered to a process unit at a...Ch. 5 - Prob. 5.78PCh. 5 - Prob. 5.79PCh. 5 - Prob. 5.80PCh. 5 - Prob. 5.81PCh. 5 - Prob. 5.82PCh. 5 - Prob. 5.83PCh. 5 - Prob. 5.84PCh. 5 - Prob. 5.85PCh. 5 - Prob. 5.86PCh. 5 - Prob. 5.87PCh. 5 - Prob. 5.88PCh. 5 - Prob. 5.89PCh. 5 - A fuel cell is an electrochemical device that...Ch. 5 - In a metered-dose inhaler (MDI), such as those...Ch. 5 - Prob. 5.92PCh. 5 - Prob. 5.93PCh. 5 - Approximately 150 SCFM (standard cubic feet per...Ch. 5 - Prob. 5.95PCh. 5 - Prob. 5.96PCh. 5 - Prob. 5.97PCh. 5 - The product gas from a coal gasification plant...Ch. 5 - Prob. 5.99PCh. 5 - Prob. 5.100PCh. 5 - A gas mixture consisting of 15.0 mole% methane....Ch. 5 - A system has been devised to store acetonitrile...Ch. 5 - Prob. 5.103PCh. 5 - Prob. 5.104P
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