EBK ORGANIC CHEMISTRY
12th Edition
ISBN: 9781119233664
Author: Snyder
Publisher: VST
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Chapter E, Problem 2PP
Practice Problem E.2
Transesterifications are catalyzed by either acids or bases. Using the transesterification reaction that takes place when dimethyl terephthalate is heated with ethylene glycol as an example, outline reasonable mechanisms for (a) the base-catalyzed reaction and (b) the acid-catalyzed reaction.
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Calculating the pH of a weak base titrated with a strong acid
An analytical chemist is titrating 241.7 mL of a 0.4900M solution of methylamine (CH3NH2) with a 0.7800M solution of HNO3. The pK of methylamine is
3.36. Calculate the pH of the base solution after the chemist has added 17.7 mL of the HNO3 solution to it.
Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO3 solution added.
Round your answer to 2 decimal places.
pH
=
☑
?
18
Ar
The following is two groups (Regular tomato sauce & Salt Reduced Tomato Sauce) of data recorded by a team analysising salt content in tomato sauce using the MOHR titration method:
Regular Tomato Sauce
Salt Reduced Tomato Sauce
223.4
148.7
353.7
278.2
334.6
268.7
305.6
234.4
340.0
262.7
304.3
283.2
244.7
143.6
QUESTION: For both groups of data calculate the answers attached in the image.
The following is a two groups (Regular tomato sauce & Salt Reduced Tomato Sauce) of data recorded by a team analysising salt content in tomato sauce using the MOHR titration method:
Regular Tomato Sauce
Salt Reduced Tomato Sauce
340.0mmol/L
262.7mmol/L
QUESTION: For both groups (Regular & Salt Reduced tomato sauce) of data provide answers to the following calculations below:
1. Standard Deviation (Sx)
2. T Values (t0.05,4)
3. 95% Confidence Interval (mmol/L)
4. [Na+] (mg/100 mL)
5. 95% Confidence Interval (mg/100 mL)
Chapter E Solutions
EBK ORGANIC CHEMISTRY
Ch. E - Prob. 1PPCh. E - Practice Problem E.2
Transesterifications are...Ch. E - Practice Problem E.3
Kodel is another polyester...Ch. E - Practice Problem E.4 Heating phthalic anhydride...Ch. E - Prob. 5PPCh. E - Practice Problem E.6
The familiar “epoxy resins”...Ch. E - Practice Problem E.7 A typical polyurethane can be...Ch. E - Practice Problem E.8
Using a para-substituted...Ch. E - Practice Problem E.9
Outline a general mechanism...
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