Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Textbook Question
Chapter 10, Problem 99IL
One way to synthesize diborane, B2H6, is the reaction
2 NaBH4(s) + 2 H3PO4(ℓ) → B2H6(g) + 2 NaH2PO4(s) + 2 H2(g)
- (a) If you have 0.136 g of NaBH4 and excess H3PO4, and you collect the resulting B2H6 in a 2.75-L flask at 25 °C, what is the pressure of the B2H6 in the flask?
- (b) A by-product of the reaction is H2 gas. If both B2H6 and H2 gas come from this reaction, what is the total pressure in the 2.75-L flask (after reaction of 0.136 g of NaBH4 with excess H3PO4) at 25 °C?
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each pair of substrates below, choose the one that will react faster in a substitution reaction, assuming that:
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How many signals do you expect in the H NMR spectrum for this molecule?
Br Br
Write the answer below.
Also, in each of the drawing areas below is a copy of the molecule, with Hs shown. In each copy, one of the H atoms is colored red. Highlight in red all other H
atoms that would contribute to the same signal as the H already highlighted red
Note for advanced students: In this question, any multiplet is counted as one signal.
1
Number of signals in the 'H NMR spectrum.
For the molecule in the top drawing area, highlight in red any other H atoms that will contribute to
the same signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at right.
Check
For the molecule in the bottom drawing area, highlight in red any other H atoms that will contribute
to the same signal as the H atom already highlighted red.
If no other H atoms will contribute, check the box at right.
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No additional Hs to color in top
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No additional Hs to color in bottom…
Chapter 10 Solutions
Chemistry & Chemical Reactivity
Ch. 10.1 - At the summit of Mount Everest (altitude = 8848...Ch. 10.1 - Prob. 1RCCh. 10.1 - Prob. 2RCCh. 10.2 - A large balloon contains 65.0 L of helium gas at...Ch. 10.2 - Prob. 2CYUCh. 10.2 - You have a 22-L cylinder of helium at a pressure...Ch. 10.2 - Prob. 4CYUCh. 10.2 - Prob. 1RCCh. 10.2 - 2. The volume of a gas sample is 235 mL at a...Ch. 10.2 - Prob. 3RC
Ch. 10.3 - Prob. 1CYUCh. 10.3 - At 1.00 atm and 25 C, the density of dry air is...Ch. 10.3 - A 0.105-g sample of a gaseous compound has a...Ch. 10.3 - Which gas has the greatest density at 25 and 1.00...Ch. 10.3 - Prob. 2RCCh. 10.3 - Prob. 3RCCh. 10.4 - Prob. 1CYUCh. 10.4 - Diborane reacts with O2 to give boric oxide and...Ch. 10.4 - 2. If you mix 1.5 L of B2H6 with 4.0 L of O2, each...Ch. 10.5 - The halothane-oxygen mixture described in this...Ch. 10.5 - Prob. 1RCCh. 10.6 - Prob. 1CYUCh. 10.6 - What is the rms speed of chlorine molecules at...Ch. 10.6 - 2. The species identified with each curve in the...Ch. 10.7 - Prob. 1CYUCh. 10.7 - In Figure 10.17, ammonia gas and hydrogen chloride...Ch. 10.8 - Prob. 1RCCh. 10.8 - At sea level, atmospheric pressure is 1.00 atm....Ch. 10.8 - Prob. 2QCh. 10.8 - To stay aloft, a blimp must achieve neutral...Ch. 10 - Pressure (See Section 10.1 and Example 10.1.) The...Ch. 10 - The average barometric pressure at an altitude of...Ch. 10 - Indicate which represents the higher pressure in...Ch. 10 - Put the following in order of increasing pressure:...Ch. 10 - Prob. 5PSCh. 10 - Prob. 6PSCh. 10 - You have 3.5 L of NO at a temperature of 22.0 C....Ch. 10 - Prob. 8PSCh. 10 - Prob. 9PSCh. 10 - You have a sample of CO2 in flask A with a volume...Ch. 10 - You have a sample of gas in a flask with a volume...Ch. 10 - A sample of gas occupies 135 mL at 22.5 C; the...Ch. 10 - One of the cylinders of an automobile engine has a...Ch. 10 - A helium-filled balloon of the type used in...Ch. 10 - Nitrogen monoxide reacts with oxygen to give...Ch. 10 - Ethane bums in air to give H2O and CO2. 2 C2H6(g)...Ch. 10 - A 1.25-g sample of CO2 is contained in a 750.-mL...Ch. 10 - A balloon holds 30.0 kg of helium. What is the...Ch. 10 - A flask is first evacuated so that it contains no...Ch. 10 - Prob. 20PSCh. 10 - Prob. 21PSCh. 10 - Prob. 22PSCh. 10 - Forty miles above Earths surface, the temperature...Ch. 10 - Prob. 24PSCh. 10 - A gaseous organofluorine compound has a density of...Ch. 10 - Prob. 26PSCh. 10 - A 1 007-g sample of an unknown gas exerts a...Ch. 10 - A 0.0130-g sample of a gas with an empirical...Ch. 10 - A new boron hydride, BxHy, has been isolated. To...Ch. 10 - Acetaldehyde is a common liquid compound that...Ch. 10 - Iron reacts with hydrochloric acid to produce...Ch. 10 - Silane, SiH4, reacts with O2 to give silicon...Ch. 10 - Prob. 33PSCh. 10 - The hydrocarbon octane (C8H18) bums to give CO2...Ch. 10 - Prob. 35PSCh. 10 - A self-contained underwater breathing apparatus...Ch. 10 - What is the total pressure in atmospheres of a gas...Ch. 10 - A cylinder of compressed gas is labeled...Ch. 10 - A halothane-oxygen mixture (C2HBrCIF3 + O2) can be...Ch. 10 - A collapsed balloon is filled with He to a volume...Ch. 10 - You have two flasks of equal volume. Flask A...Ch. 10 - Equal masses of gaseous N2 and Ar are placed in...Ch. 10 - If the rms speed of an oxygen molecule is 4.28 ...Ch. 10 - Prob. 44PSCh. 10 - Place the following gases in order of increasing...Ch. 10 - Prob. 46PSCh. 10 - In each pair of gases below, tell which will...Ch. 10 - Prob. 48PSCh. 10 - Prob. 49PSCh. 10 - A sample of uranium fluoride is found to effuse at...Ch. 10 - Prob. 51PSCh. 10 - Prob. 52PSCh. 10 - In the text, it is stated that the pressure of...Ch. 10 - You want to store 165 g of CO2 gas in a 12.5-L...Ch. 10 - Consider a 5.00-L tank containing 325 g of H2O at...Ch. 10 - Consider a 5.00-L tank containing 375 g of Ar at a...Ch. 10 - Complete the following table:Ch. 10 - On combustion, 1.0 L of a gaseous compound of...Ch. 10 - You have a sample of helium gas at 33 C, and you...Ch. 10 - Prob. 60GQCh. 10 - Butyl mercaptan, C4H9SH, has a very bad odor and...Ch. 10 - Prob. 62GQCh. 10 - The temperature of the atmosphere on Mars can be...Ch. 10 - If you place 2.25 g of solid silicon in a 6.56-L...Ch. 10 - What volume (in liters) of O2, measured at...Ch. 10 - Nitroglycerin decomposes into four different gases...Ch. 10 - Ni(CO)4 can be made by reacting finely divided...Ch. 10 - Ethane bums in air to give H2O and CO2. 2 C2H6(g)...Ch. 10 - You have four gas samples: 1. 1.0 L of H2 at STP...Ch. 10 - Propane reacts with oxygen to give carbon dioxide...Ch. 10 - Iron carbonyl can be made by the direct reaction...Ch. 10 - Prob. 72GQCh. 10 - There are five compounds in the family of...Ch. 10 - A miniature volcano can be made in the laboratory...Ch. 10 - The density of air 20 km above Earths surface is...Ch. 10 - Prob. 76GQCh. 10 - Chlorine dioxide, ClO2, reacts with fluorine to...Ch. 10 - A xenon fluoride can be prepared by heating a...Ch. 10 - Prob. 79GQCh. 10 - Prob. 80GQCh. 10 - Prob. 81GQCh. 10 - Carbon dioxide, CO2, was shown lo effuse through a...Ch. 10 - Prob. 84GQCh. 10 - Prob. 85GQCh. 10 - Prob. 86GQCh. 10 - You are given 1.56 g of a mixture of KClO3 and...Ch. 10 - A study of climbers who reached the summit of...Ch. 10 - Nitrogen monoxide reacts with oxygen to give...Ch. 10 - Ammonia gas is synthesized by combining hydrogen...Ch. 10 - Nitrogen trifluoride is prepared by the reaction...Ch. 10 - Chlorine trifluoride, ClF3, is a valuable reagent...Ch. 10 - Prob. 93GQCh. 10 - Prob. 94GQCh. 10 - You have a 550.-mL tank of gas with a pressure of...Ch. 10 - Prob. 96ILCh. 10 - Prob. 97ILCh. 10 - Group 2A metal carbonates are decomposed to the...Ch. 10 - One way to synthesize diborane, B2H6, is the...Ch. 10 - You are given a solid mixture of NaNO2 and NaCl...Ch. 10 - You have 1.249 g of a mixture of NaHCO3 and...Ch. 10 - Prob. 102ILCh. 10 - Many nitrate salts can be decomposed by heating....Ch. 10 - You have a gas, one of the three known...Ch. 10 - Prob. 106ILCh. 10 - A 1.0-L flask contains 10.0 g each of O2 and CO2...Ch. 10 - If equal masses of O2 and N2 are placed in...Ch. 10 - You have two pressure-proof steel cylinders of...Ch. 10 - Prob. 110SCQCh. 10 - Prob. 111SCQCh. 10 - Each of four flasks is filled with a different...Ch. 10 - Prob. 113SCQCh. 10 - The sodium azide required for automobile air bags...Ch. 10 - Prob. 115SCQCh. 10 - Prob. 116SCQ
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