Bundle: Chemistry for Today: General, Organic, and Biochemistry, Loose-Leaf Version, 9th + LMS Integrated OWLv2, 4 terms (24 months) Printed Access Card
9th Edition
ISBN: 9781337598255
Author: Spencer L. Seager
Publisher: Cengage Learning
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Chapter 8, Problem 8.86E
By which of the following mechanisms does a catalyst operate?
a. It decreases the activation energy barrier for a reaction.
b. It serves as a reactant and is consumed.
c. It increases the temperature of a reaction.
d. It increases the concentration of reactants.
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Solution
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Use retrosynthetic analysis to suggest two paths to synthesize 2-methyl-3-hexanol using the Grignard reaction. (Click and drag
the appropriate image to the correct position in the reactions.)
Route 1
Aldehyde 1
or
+98
Aldehyde 2
Route 2
Q6
+100
Solved in 1 attempt
Q7
+95
Solved in 2 attempts
Q8
+98
Unlimited attempts
possible
+
+
Grignard 1
OH
H3O+
Grignard 2
Answer Bank
Q9
+90
MgBr
Unlimited attempts
possible
CH3CH2CH2MgBr
Q10
Unlimited attempts
Q11
?
?
+100
in 1 attempt
2-methyl-3-hexanol
CH3CH2MgBr
H
H
о
H
Attempt 3
2) (4 pt) After the reaction was completed, the student collected the following data. Crude
product data is the data collected after the reaction is finished, but before the product
is purified. "Pure" product data is the data collected after attempted purification using
recrystallization.
Student B's data:
Crude product data
"Pure"
product data
after
recrystallization
Crude mass: 0.93 g grey solid
Crude mp: 96-106 °C
Crude % yield:
Pure mass: 0.39 g white solid
Pure mp: 111-113 °C
Pure % yield:
a) Calculate the crude and pure percent yields for the student's reaction.
b) Summarize what is indicated by the crude and pure melting points.
Don't used hand raiting
Chapter 8 Solutions
Bundle: Chemistry for Today: General, Organic, and Biochemistry, Loose-Leaf Version, 9th + LMS Integrated OWLv2, 4 terms (24 months) Printed Access Card
Ch. 8 - Classify the following processes as spontaneous or...Ch. 8 - Classify the following processes as spontaneous or...Ch. 8 - Classify the following processes as exergonic or...Ch. 8 - Classify the following processes as exergonic or...Ch. 8 - Describe the energy and entropy changes that occur...Ch. 8 - Describe the energy and entropy changes that occur...Ch. 8 - Pick the example with the highest entropy from...Ch. 8 - Pick the example with the highest entropy from...Ch. 8 - You probably know that on exposure to air silver...Ch. 8 - Classify the following processes according to...
Ch. 8 - Classify the following processes according to...Ch. 8 - Describe the observations or measurements that...Ch. 8 - Prob. 8.13ECh. 8 - Consider the following hypothetical reaction: A+BC...Ch. 8 - Consider the following hypothetical reaction: A+BC...Ch. 8 - A reaction generates chlorine gas (Cl2) as a...Ch. 8 - A reaction generates hydrogen gas (H2) as a...Ch. 8 - Prob. 8.18ECh. 8 - Prob. 8.19ECh. 8 - In each of the following, which reaction mechanism...Ch. 8 - Which reaction mechanism assumptions are...Ch. 8 - Prob. 8.22ECh. 8 - Sketch energy diagrams to represent each of the...Ch. 8 - Prob. 8.24ECh. 8 - Use energy diagrams to compare catalyzed and...Ch. 8 - Prob. 8.26ECh. 8 - The following reactions are proposed. Make a rough...Ch. 8 - Prob. 8.28ECh. 8 - Prob. 8.29ECh. 8 - Suppose you are running a reaction and you want to...Ch. 8 - A reaction is started by mixing reactants. As time...Ch. 8 - A reaction is run at 10C and takes 3.7hours to go...Ch. 8 - What factor is more important than simply the...Ch. 8 - Prob. 8.34ECh. 8 - Describe the establishment of equilibrium in a...Ch. 8 - Prob. 8.36ECh. 8 - Prob. 8.37ECh. 8 - Colorless hydrogen gas (H2) and red-brown colored...Ch. 8 - Colorless N2O4 gas decomposes to form red-brown...Ch. 8 - Prob. 8.40ECh. 8 - Write an equilibrium expression for each of the...Ch. 8 - Prob. 8.42ECh. 8 - Prob. 8.43ECh. 8 - Prob. 8.44ECh. 8 - Prob. 8.45ECh. 8 - A sample of gaseous BrCl is allowed to decompose...Ch. 8 - At 600C, gaseous CO and Cl2 are mixed together in...Ch. 8 - A mixture of the gases NOCl, Cl2 and NO is allowed...Ch. 8 - Consider the following equilibrium constants....Ch. 8 - Prob. 8.50ECh. 8 - Use Le Chteliers principle to predict the...Ch. 8 - Use Le Chteliers principle to predict the...Ch. 8 - Use Le Chteliers principle to predict the...Ch. 8 - Prob. 8.54ECh. 8 - Tell what will happen to each equilibrium...Ch. 8 - Tell what will happen to each equilibrium...Ch. 8 - The gaseous reaction 2HBr(g)H2(g)+Br2(g) is...Ch. 8 - Prob. 8.58ECh. 8 - Prob. 8.59ECh. 8 - Prob. 8.60ECh. 8 - Prob. 8.61ECh. 8 - Prob. 8.62ECh. 8 - Prob. 8.63ECh. 8 - Prob. 8.64ECh. 8 - Prob. 8.65ECh. 8 - Prob. 8.66ECh. 8 - Refer to Figure 8.10 and answer the questions....Ch. 8 - Refer to Figure 8.13 and answer the questions....Ch. 8 - Prob. 8.69ECh. 8 - Prob. 8.70ECh. 8 - Suppose you have two identical unopened bottles of...Ch. 8 - Someone once suggested that it is impossible to...Ch. 8 - A reaction takes place between an acid and...Ch. 8 - If the reaction:A+BC+D is designated as first...Ch. 8 - Prob. 8.75ECh. 8 - A book is held 6 feet above the floor and then...Ch. 8 - Prob. 8.77ECh. 8 - Prob. 8.78ECh. 8 - Prob. 8.79ECh. 8 - Prob. 8.80ECh. 8 - Prob. 8.81ECh. 8 - Which of the following is the best example of...Ch. 8 - Which is NOT an example of an endothermic change?...Ch. 8 - Which of the following processes is endothermic?...Ch. 8 - Which sentence best describes the following...Ch. 8 - By which of the following mechanisms does a...Ch. 8 - Which of the following is NOT true of reversible...Ch. 8 - Given the reaction: 2CO(g)+O2(g)2CO2(g) When there...Ch. 8 - Prob. 8.89ECh. 8 - Consider the reaction N2(g)+3H2(g)2NH3(g)+heat....Ch. 8 - Prob. 8.91ECh. 8 - Prob. 8.92ECh. 8 - For the reaction: H2(g)+Br2(g)2HBr(g), the...Ch. 8 - Prob. 8.94E
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