Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 137AE

The nitrogen content of organic compounds can be determined by the Dumas method. The compound in question is first reacted by passage over hot CuO(s):

Compound  CuO( s ) Hot  N 2 ( g )   +  CO 2 ( g )   +  H 2 O ( g )

The product gas is then passed through a concentrated solution of KOH to remove the CO2. After passage through the KOH solution, the gas contains N2 and is saturated with water vapor. In a given experiment a 0.253-g sample of a compound produced 31.8 mL N2 saturated with water vapor at 25°C and 726 torr. What is the mass percent of nitrogen in the compound? (The vapor pressure of water at 25°C is 23.8 torr.)

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Chapter 5 Solutions

Chemistry

Ch. 5 - Prob. 3ALQCh. 5 - Prob. 4ALQCh. 5 - Prob. 6ALQCh. 5 - Prob. 8ALQCh. 5 - Prob. 11ALQCh. 5 - Prob. 12ALQCh. 5 - Prob. 13ALQCh. 5 - Prob. 14ALQCh. 5 - Prob. 17ALQCh. 5 - Prob. 18ALQCh. 5 - Draw molecular-level views that show the...Ch. 5 - Prob. 22QCh. 5 - Prob. 23QCh. 5 - Prob. 24QCh. 5 - Prob. 25QCh. 5 - As weather balloons rise from the earths surface,...Ch. 5 - Prob. 27QCh. 5 - Consider two different containers, each filled...Ch. 5 - Prob. 29QCh. 5 - Prob. 32QCh. 5 - Prob. 33QCh. 5 - Prob. 34QCh. 5 - Prob. 35QCh. 5 - Prob. 36QCh. 5 - Prob. 37QCh. 5 - Without looking at a table of values, which of the...Ch. 5 - Prob. 39QCh. 5 - Prob. 40QCh. 5 - Prob. 41ECh. 5 - Prob. 42ECh. 5 - A sealed-tube manometer (as shown below) can be...Ch. 5 - Prob. 44ECh. 5 - A diagram for an open-tube manometer is shown...Ch. 5 - Prob. 46ECh. 5 - Prob. 47ECh. 5 - Prob. 48ECh. 5 - An 11.2-L sample of gas is determined to contain...Ch. 5 - Prob. 50ECh. 5 - Prob. 51ECh. 5 - Prob. 52ECh. 5 - Prob. 53ECh. 5 - Prob. 54ECh. 5 - The Steel reaction vessel of a bomb calorimeter,...Ch. 5 - A 5.0-L flask contains 0.60 g O2 at a temperature...Ch. 5 - Prob. 57ECh. 5 - A person accidentally swallows a drop of liquid...Ch. 5 - Prob. 59ECh. 5 - N2O is a gas commonly used to help sedate patients...Ch. 5 - A gas sample containing 1.50 moles at 25C exerts a...Ch. 5 - Prob. 62ECh. 5 - Prob. 63ECh. 5 - What will be the effect on the volume of an ideal...Ch. 5 - Prob. 65ECh. 5 - Prob. 66ECh. 5 - An ideal gas is contained in a cylinder with a...Ch. 5 - Prob. 68ECh. 5 - A sealed balloon is filled with 1.00 L helium at...Ch. 5 - Prob. 70ECh. 5 - Consider the following reaction:...Ch. 5 - A student adds 4.00 g of dry ice (solid CO2) to an...Ch. 5 - Air bags are activated when a severe impact causes...Ch. 5 - Concentrated hydrogen peroxide solutions are...Ch. 5 - In 1897 the Swedish explorer Andre tried to reach...Ch. 5 - Sulfur trioxide, SO3, is produced in enormous...Ch. 5 - A 15.0-L rigid container was charged with 0.500...Ch. 5 - An important process for the production of...Ch. 5 - Consider the reaction between 50.0 mL liquid...Ch. 5 - Urea (H2NCONH2) is used extensively as a nitrogen...Ch. 5 - Prob. 81ECh. 5 - Prob. 82ECh. 5 - Prob. 83ECh. 5 - A compound has the empirical formula CHCl. A...Ch. 5 - Prob. 85ECh. 5 - Silicon tetrachloride (SiCl4) and trichlorosilane...Ch. 5 - Prob. 87ECh. 5 - Prob. 88ECh. 5 - For scuba dives below 150 ft, helium is often used...Ch. 5 - Prob. 90ECh. 5 - Consider the flasks in the following diagram. What...Ch. 5 - Consider the flask apparatus in Exercise 85, which...Ch. 5 - Prob. 93ECh. 5 - At 0C a 1.0-L flask contains 5.0 102 mole of N2,...Ch. 5 - A mixture of cyclopropane and oxygen is sometimes...Ch. 5 - Prob. 96ECh. 5 - Prob. 97ECh. 5 - A tank contains a mixture of 52.5 g oxygen gas and...Ch. 5 - Prob. 99ECh. 5 - Helium is collected over water at 25C and 1.00 atm...Ch. 5 - At elevated temperatures, sodium chlorate...Ch. 5 - Xenon and fluorine will react to form binary...Ch. 5 - Methanol (CH3OH) can be produced by the following...Ch. 5 - In the Mthode Champenoise, grape juice is...Ch. 5 - Hydrogen azide, HN3, decomposes on heating by the...Ch. 5 - Prob. 106ECh. 5 - Prob. 107ECh. 5 - The oxides of Group 2A metals (symbolized by M...Ch. 5 - Prob. 109ECh. 5 - Prob. 110ECh. 5 - Prob. 111ECh. 5 - Prob. 112ECh. 5 - Prob. 113ECh. 5 - Prob. 114ECh. 5 - Prob. 115ECh. 5 - Prob. 116ECh. 5 - Prob. 117ECh. 5 - Prob. 118ECh. 5 - Prob. 119ECh. 5 - Prob. 120ECh. 5 - Prob. 121ECh. 5 - Prob. 122ECh. 5 - Prob. 123ECh. 5 - Prob. 124ECh. 5 - Use the data in Table 84 to calculate the partial...Ch. 5 - Prob. 126ECh. 5 - Prob. 127ECh. 5 - Prob. 128ECh. 5 - Prob. 129ECh. 5 - Prob. 130ECh. 5 - Prob. 131AECh. 5 - At STP, 1.0 L Br2 reacts completely with 3.0 L F2,...Ch. 5 - Prob. 133AECh. 5 - Prob. 134AECh. 5 - Prob. 135AECh. 5 - Cyclopropane, a gas that when mixed with oxygen is...Ch. 5 - The nitrogen content of organic compounds can be...Ch. 5 - Hyperbaric oxygen therapy is used to treat...Ch. 5 - A 15.0L tank is filled with H2 to a pressure of...Ch. 5 - A spherical glass container of unknown volume...Ch. 5 - Prob. 141AECh. 5 - A 20.0L stainless steel container at 25C was...Ch. 5 - Metallic molybdenum can be produced from the...Ch. 5 - Prob. 144AECh. 5 - Prob. 145AECh. 5 - One of the chemical controversies of the...Ch. 5 - An organic compound contains C, H, N, and O....Ch. 5 - Prob. 148AECh. 5 - Prob. 149CWPCh. 5 - Prob. 150CWPCh. 5 - A certain flexible weather balloon contains helium...Ch. 5 - A large flask with a volume of 936 mL is evacuated...Ch. 5 - A 20.0L nickel container was charged with 0.859...Ch. 5 - Consider the unbalanced chemical equation below:...Ch. 5 - Prob. 155CWPCh. 5 - Which of the following statements is(are) true? a....Ch. 5 - A chemist weighed out 5.14 g of a mixture...Ch. 5 - A mixture of chromium and zinc weighing 0.362 g...Ch. 5 - Prob. 159CPCh. 5 - You have an equimolar mixture of the gases SO2 and...Ch. 5 - Methane (CH4) gas flows into a combustion chamber...Ch. 5 - Prob. 162CPCh. 5 - Prob. 163CPCh. 5 - Prob. 164CPCh. 5 - You have a helium balloon at 1.00 atm and 25C. 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    Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY