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WebAssign for Zumdahl's Chemical Principles, 8th Edition [Instant Access], Single-Term
8th Edition
ISBN: 9780357119112
Author: Zumdahl; Steven S.
Publisher: Cengage Learning US
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Textbook Question
Chapter 10, Problem 21E
In the roll of two dice, what total number is the mostlikely to occur? Is there an energy reason why this numberis favored? Would energy have to be spent to increasethe probability of getting a particular number(that is, to cheat)?
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each pair of substrates below, choose the one that will react faster in a substitution reaction, assuming that:
1. the rate of substitution doesn't depend on nucleophile concentration and
2. the products are a roughly 50/50 mixture of enantiomers.
Substrate A
Substrate B
Faster Rate
X
Ś
CI
(Choose one)
(Choose one)
CI
Br
Explanation
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Br
(Choose one)
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NMR spectrum of ethyl acetate has signals whose chemical shifts are indicated below. Which hydrogen or set of hydrogens corresponds to the signal at
4.1 ppm? Select the single best answer.
The
H
O
HỌC—C—0—CH, CH,
2
A
ethyl acetate
H NMR: 1.3 ppm, 2.0 ppm, 4.1 ppm
Check
OA
B
OC
ch
B
C
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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.
O
✓
No additional Hs to color in top
molecule
ง
No additional Hs to color in bottom…
Chapter 10 Solutions
WebAssign for Zumdahl's Chemical Principles, 8th Edition [Instant Access], Single-Term
Ch. 10 - For the process A(l)A(g) , which direction is...Ch. 10 - Prob. 2DQCh. 10 - Prob. 3DQCh. 10 - Prob. 4DQCh. 10 - Prob. 5DQCh. 10 - Prob. 6DQCh. 10 - Predict the sign of S for each of the following...Ch. 10 - Prob. 8DQCh. 10 - Prob. 9DQCh. 10 - At 1 atm, liquid water is heated above 100°C. For...
Ch. 10 - Prob. 11DQCh. 10 - Prob. 12ECh. 10 - Prob. 13ECh. 10 - Prob. 14ECh. 10 - Consider the following energy levels, each capable...Ch. 10 - Prob. 16ECh. 10 - Prob. 17ECh. 10 - Which of the following involve an increase in the...Ch. 10 - Prob. 19ECh. 10 - Choose the substance with the larger positional...Ch. 10 - In the roll of two dice, what total number is the...Ch. 10 - Entropy can be calculated by a relationship...Ch. 10 - Calculate the energy required to change the...Ch. 10 - For nitrogen gas the values of CvandCp at 25°Care...Ch. 10 - Consider a rigid, insulated box containing 0.400...Ch. 10 - One mole of an ideal gas is contained in a...Ch. 10 - One mole of an ideal gas with a volume of 1.0 L...Ch. 10 - A cylinder with an initial volume of 10.0 L is...Ch. 10 - The molar heat capacities for carbon dioxide at...Ch. 10 - The molar entropy of helium gas at 25°C and 1.00...Ch. 10 - Consider the process A(l)A(g)75C155C which is...Ch. 10 - A sample of ice weighing 18.02 g, initially at...Ch. 10 - Calculate the entropy change for a process in...Ch. 10 - Calculate the change in entropy that occurs...Ch. 10 - The synthesis of glucose directly from CO2andH2O...Ch. 10 - A green plant synthesizes glucose by...Ch. 10 - Entropy has been described as “time’s arrow.”...Ch. 10 - For a gas phase reaction, what do you concentrate...Ch. 10 - What determines Ssurr for a process? To calculate...Ch. 10 - Predict the sign of Ssurr for the following...Ch. 10 - Calculate Ssurr for the following reactions at...Ch. 10 - For each of the following pairs of substances,...Ch. 10 - Predict the sign of S for each of the following...Ch. 10 - Prob. 44ECh. 10 - Prob. 45ECh. 10 - For the reaction CS2(g)+3O2(g)CO2(g)+2SO2(g) S is...Ch. 10 - For the reaction C2H2(g)+4F2(g)2CF4(g)+H2(g) S is...Ch. 10 - Ethanethiol ( C2H5SH ; also called ethyl...Ch. 10 - For mercury at 1 atm, the enthalpy of vaporization...Ch. 10 - The enthalpy of vaporization of ethanol is 38.7...Ch. 10 - For ammonia (NH3) the enthalpy of fusion is 5.65...Ch. 10 - It is quite common for a solid to change from one...Ch. 10 - As O2(l) is cooled at 1 atm, it freezes at 54.5 K...Ch. 10 - Prob. 54ECh. 10 - The value of G for the reaction...Ch. 10 - Of the functions H,S,andG , which dependsmost...Ch. 10 - For the reaction at 29° K, 2NO2(g)N2O4(g) the...Ch. 10 - Consider the reaction...Ch. 10 - Consider the reaction 2POCl3(g)2PCl3(g)+O2(g) a....Ch. 10 - Consider two reactions for the production of...Ch. 10 - Prob. 61ECh. 10 - Prob. 62ECh. 10 - When most biological enzymes are heated, they...Ch. 10 - For the reaction 2O(g)O2(g) a. predict the signs...Ch. 10 - Hydrogen cyanide is produced industrially by the...Ch. 10 - A reaction at constant T and P is spontaneous as...Ch. 10 - G predicts spontaneity for a reaction at constant...Ch. 10 - Using thermodynamic data from Appendix 4,...Ch. 10 - Prob. 69ECh. 10 - Using data from Appendix 4, calculate G for...Ch. 10 - Prob. 71ECh. 10 - One of the reactions that destroys ozone in the...Ch. 10 - Hydrogen sulfide can be removed from natural gas...Ch. 10 - Consider the autoionization of water at 25°C:...Ch. 10 - How can one estimate the value of K at...Ch. 10 - The standard free energies of formation and the...Ch. 10 - Consider the reaction...Ch. 10 - Prob. 78ECh. 10 - Consider the following reaction at 800. K:...Ch. 10 - Consider the following reaction at 298 K:...Ch. 10 - For the reaction A(g)+2B(g)C(g) the initial...Ch. 10 - Consider the following diagram of free energy (G)...Ch. 10 - Calculate G for H2O(g)+12O2(g)H2O2(g) at600. K,...Ch. 10 - Cells use the hydrolysis of adenosine...Ch. 10 - Carbon monoxide is toxic because it bonds much...Ch. 10 - One reaction that occurs in human metabolism is...Ch. 10 - At 25.0°C, for the reaction 2NO2(g)N2O4(g) the...Ch. 10 - Consider the relationship ln(K)=HRT+SR The...Ch. 10 - a. Use the equation in Exercise 88 to determine H...Ch. 10 - The equilibrium constant K for the reaction...Ch. 10 - The equilibrium constant for a certain reaction...Ch. 10 - A sample of a monatomic ideal gas at 1.00 atm...Ch. 10 - A sample of 1.75 moles of H2(Cv=20.5JK-1mol-1) at...Ch. 10 - A 1.50-mole sample of an ideal gas is allowed to...Ch. 10 - Consider 1.00 mole of CO2(g) at 300. K and 5.00...Ch. 10 - Prob. 96ECh. 10 - A mixture of hydrogen gas and chlorine gas...Ch. 10 - When the environment is contaminated by a toxic...Ch. 10 - If you calculate a value for G for a reaction...Ch. 10 - Given the following illustration, what can be said...Ch. 10 - Some water is placed in a coffee cup calorimeter....Ch. 10 - Using Appendix 4 and the following data, determine...Ch. 10 - Prob. 103AECh. 10 - Human DNA contains almost twice as much...Ch. 10 - The enthalpy of vaporization of chloroform (CHCl3)...Ch. 10 - Two crystalline forms of white phosphorus are...Ch. 10 - Monochloroethane (C2H5Cl) can be produced by...Ch. 10 - Acrylonitrile is the starting material used in the...Ch. 10 - Prob. 109AECh. 10 - Many biochemical reactions that occur in cells...Ch. 10 - Consider the following reaction at 35°C:...Ch. 10 - Consider the reaction H2(g)+Br2(g)2HBr(g) where...Ch. 10 - At 1500 K the process I2(g)2I(g)10atm10atm is not...Ch. 10 - Using the following data, calculate the value of...Ch. 10 - Sodium chloride is added to water (at 25°C) until...Ch. 10 - Prob. 116AECh. 10 - Prob. 117AECh. 10 - The deciding factor on why HF is a weak acid and...Ch. 10 - Prob. 119AECh. 10 - Calculate the entropy change for the vaporization...Ch. 10 - The standard entropy values (S°) for...Ch. 10 - Calculate the values of S and G for each of the...Ch. 10 - Calculate the changes in free energy, enthalpy,...Ch. 10 - Consider the isothermal expansion of 1.00 mole of...Ch. 10 - A 1.00-mole sample of an ideal gas in a vessel...Ch. 10 - One mole of an ideal gas with a volume of 6.67 L...Ch. 10 - Which of the following reactions (or processes)...Ch. 10 - For rubidium Hvap=69.0kJ/mol at 686°C, its...Ch. 10 - Given the thermodynamic data below, calculate S...Ch. 10 - Consider the reaction: H2S(g)+SO2(g)3S(g)+2H2O(l)...Ch. 10 - The following reaction occurs in pure water:...Ch. 10 - Consider the dissociation of a weak acid HA...Ch. 10 - Consider the reaction: PCl3(g)+Cl2(g)PCl5(g) a....Ch. 10 - The equilibrium constant for a certain reaction...Ch. 10 - Consider a 2.00-mole sample of Ar at 2.00 atm...Ch. 10 - Prob. 136CPCh. 10 - One mole of an ideal gas undergoes an isothermal...Ch. 10 - At least some of what is in the following quoted...Ch. 10 - You have a 1.00-L sample of hot water (90.°C)...Ch. 10 - Consider two perfectly insulated vessels. Vessel 1...Ch. 10 - If wet silver carbonate is dried in a stream of...Ch. 10 - Consider a weak acid HX. If a 0.10 M solution of...Ch. 10 - Using data from Appendix 4, calculate H , G , and...Ch. 10 - One mole of a monatomic ideal gas (for which...Ch. 10 - Consider the system A(g)B(g) a. 25°C. a. Assuming...Ch. 10 - Liquid water at 25°C is introduced into an...Ch. 10 - Consider 1.00 mole of an ideal gas that is...Ch. 10 - Prob. 148CPCh. 10 - Consider the reaction 2CO(g)+O2(g)2CO2(g) a. Using...Ch. 10 - Prob. 150CPCh. 10 - Prob. 151CPCh. 10 - Consider the following Cp values for N2(g) :...Ch. 10 - Benzene (C6H6) has a melting point of 5.5°C and...Ch. 10 - Prob. 154MPCh. 10 - Prob. 155MP
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- in the kinetics experiment, what were the values calculated? Select all that apply.a) equilibrium constantb) pHc) order of reactiond) rate contstantarrow_forwardtrue or false, given that a 20.00 mL sample of NaOH took 24.15 mL of 0.141 M HCI to reach the endpoint in a titration, the concentration of the NaOH is 1.17 M.arrow_forwardin the bromothymol blue experiment, pKa was measured. A closely related compound has a Ka of 2.10 x 10-5. What is the pKa?a) 7.1b) 4.7c) 2.0arrow_forward
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