Lecture 10 - Chapter 7 Introduction to Titrations 1....

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Chapter 7 Introduction to Titrations 1. Titrations are a class of volumetric analyses A volumetric analysis: + TC titration reaction: A T C A titration reaction: The key point in titrations:
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Titratrant Equivalence point End point Indicator Standardization Direct titration Back titration
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2. Titration calculations The key point in titrations: Kjeldahl nalysis je da aay ss
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Example Kjeldahl Analysis typical protein contains 16 2 wt % nitrogen A 0 500 L aliquot solution was A typical protein contains 16.2 wt % nitrogen. A 0.500-mL aliquot solution was digested, and the liberated NH 3 was distilled into 10.00 mL of 0.021 40 M HCl. The unreacted HCl required 3.26 mL of 0.0198 M NaOH for complete titration. Find the concentration of protein (mg protein/mL) in the original sample. If 50.00 mg of melamine (126.12 g/mol) was added into the original sample, find the
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This note was uploaded on 09/10/2009 for the course CHM 3120 taught by Professor Harrison during the Spring '08 term at University of Florida.

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Lecture 10 - Chapter 7 Introduction to Titrations 1....

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