Organic Chemistry Plus Masteringchemistry With Pearson Etext, Global Edition
9th Edition
ISBN: 9781292151229
Author: Wade, LeRoy G.
Publisher: PEARSON
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Chapter 25.4, Problem 25.5P
Several commercial laundry soaps contain water-softening agents, usually sodium carbonate (Na2CO3) or sodium phosphate (Na3PO4 or Na2HPO4). Explain how these water-softening agents allow soaps to be used in water that is hard by virtue of its
- a. low pH.
- b. dissolved Ca2+, Mg2+, and Fe3+ salts.
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What is the pH of a solution containing a mixture of 0.050 M HC2H3O2 and 0.025 M NaC2H3O2? (Ka = 1.8 × 10-5 for HC2H3O2)
a.
4.74
b.
4.44
c.
2.87
d.
5.05
16. Propanoic acid, CH3CH2COOH together with its sodium salt, CH3CH2COONA is used as
preservatives in the food industry.
a. Write an equation for the dissociation of the acid in water.
b. Calculate its acid dissociation constant if the pH of 0.24 M of the acid is 2.75.
c. Write an equation for the hydrolysis of the sodium salt, CH3CH2COONA in water.
Calculate the hydrolysis constant of the salt.
10. The K₂ of HONH₂ is 1.1 x 10-8.
a. Calculate the pH and percent dissociation of a solution containing 0.100 M HONH2.
b. Calculate the pH and percent dissociation of a mixture containing 0.100 M HONH2 and 0.100 M
HONH3CI. (Assume complete dissociation of HONH3CI.)
Chapter 25 Solutions
Organic Chemistry Plus Masteringchemistry With Pearson Etext, Global Edition
Ch. 25.3 - Prob. 25.1PCh. 25.3A - Prob. 25.2PCh. 25.3B - Give an equaton for the complete transestenfcation...Ch. 25.4 - Prob. 25.4PCh. 25.4 - Several commercial laundry soaps contain...Ch. 25.4 - Prob. 25.6PCh. 25.4 - Prob. 25.7PCh. 25.5 - Prob. 25.8PCh. 25.6 - How would you use a simple extraction to separate...Ch. 25.6 - Prob. 25.10P
Ch. 25.8A - Circle the isoprene units in geranial, menthol,...Ch. 25.8B - Prob. 25.12PCh. 25.8B - Prob. 25.13PCh. 25 - Prob. 25.14SPCh. 25 - Prob. 25.15SPCh. 25 - Show how you would convert oleic acid to the...Ch. 25 - Give the general classification of each compound....Ch. 25 - Phospholipids undergo saponification much like...Ch. 25 - Prob. 25.19SPCh. 25 - Prob. 25.20SPCh. 25 - Prob. 25.21SPCh. 25 - Prob. 25.22SPCh. 25 - Prob. 25.23SPCh. 25 - The structure of limonene appears in Problem25-13....Ch. 25 - Prob. 25.25SPCh. 25 - Prob. 25.26SPCh. 25 - Prob. 25.27SPCh. 25 - Prob. 25.28SPCh. 25 - Prob. 25.29SPCh. 25 - Prob. 25.30SPCh. 25 - Prob. 25.31SPCh. 25 - Prob. 25.32SP
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