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Analytical Chemistry

Qualitative and quantitative analysis, titration, and lab techniques.

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Analytical Chemistry
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QUESTION NO 01
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Precision describes?

Answer: Reproducibility of results
Precision is scatter; accuracy is closeness to truth.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
302 Quizzes
2930 Questions
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QUESTION NO 02
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Beer–Lambert law relates absorbance to?

Answer: Concentration and path length
A = εcl for dilute solutions.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
302 Quizzes
2930 Questions
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QUESTION NO 03
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Titration determines concentration by?

Answer: Reacting with a standard solution of known concentration
A titrant of known concentration reacts to an endpoint/equivalence point.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
302 Quizzes
2930 Questions
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QUESTION NO 04
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Chromatography separates components based on?

Answer: Differential partitioning between phases
Mobile vs stationary phase affinities differ.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
302 Quizzes
2930 Questions
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QUESTION NO 05
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Chromatography separates components based on?

Answer: Differential partitioning between phases
Mobile vs stationary phase affinities differ.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
302 Quizzes
2930 Questions
00 Likes
QUESTION NO 06
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Beer–Lambert law relates absorbance to?

Answer: Concentration and path length
A = εcl for dilute solutions.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
302 Quizzes
2930 Questions
00 Likes
QUESTION NO 07
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Phenolphthalein is commonly used as?

Answer: An acid–base indicator
It changes color around pH ~8–10.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
302 Quizzes
2930 Questions
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QUESTION NO 08
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Equivalence point is when?

Answer: Stoichiometrically equivalent amounts have reacted
It is the theoretical stoichiometric completion point.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
302 Quizzes
2930 Questions
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QUESTION NO 09
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A blank in analysis accounts for?

Answer: Background/contamination signals
Blanks correct for reagents and matrix contributions.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
302 Quizzes
2930 Questions
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QUESTION NO 10
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Gravimetric analysis measures?

Answer: Mass of a product/precipitate
Mass of an isolated form yields analyte amount.
Shahzad Mahota
Shahzad Mahota @shahzad-mahota
302 Quizzes
2930 Questions
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