GENERAL CHEMISTRY-SOLUTIONS MANUAL
11th Edition
ISBN: 9780132925044
Author: Petrucci
Publisher: PEARSON
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Question
Chapter 21, Problem 79FP
Interpretation Introduction
(a)
Interpretation:
The salinity of the mono lake is to be determined and it is to be compared with the salinity of the sea water.
Concept introduction:
The term salinity refers to the saltness or the inorganic salt content that has been dissolved in the body of the water.
Interpretation Introduction
(b)
Interpretation:
The pH of the mono lake water is to be determined.
Concept introduction:
The pH of a given solution is used to express the amount of hydrogen or the hydroxide ions in the given solution. It is used to express the acidity and the basicity of the given solution.
Interpretation Introduction
(c)
Interpretation:
The formation of tufa in the mono lake is to be determined.
Concept introduction:
Tufa is a type of highly porous, sedimentary rock which is composed of calcium carbonate. It is mainly formed by the chemical and biological precipitation of Calcite or aragonite that are obtained from cold and supersaturated surface or ground water.
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The percent nitrogen (N) in a protein sample can be determined by reacting the protein with sulfuric acid to produce ammonium sulfate. The ammonium sulfate is reacted with concentrated sodium hydroxide to form ammonia gas. The ammonia gas is collected by bubbling it through a known volume of standardized hydrochloric acid solution (all of the ammonia reacts in this step, is consumed). The unreacted hydrochloric acid is then back-titrated with standardized sodium hydroxide solution. The reactions involved are shown below:
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Chapter 21 Solutions
GENERAL CHEMISTRY-SOLUTIONS MANUAL
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