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Questions and Answers
What is the primary focus of analytical chemistry?
What is the primary focus of analytical chemistry?
- The separation, identification, and quantification of chemical components in a sample (correct)
- The synthesis of new chemical compounds
- The application of chemistry in environmental studies
- The study of chemical reactions in isolated systems
Which type of analysis determines the exact amount of each constituent in a sample?
Which type of analysis determines the exact amount of each constituent in a sample?
- Complete/Exact Analysis (correct)
- Qualitative Analysis
- Ultimate Analysis
- Proximate Analysis
What does qualitative analysis primarily identify?
What does qualitative analysis primarily identify?
- What substances are present in a sample (correct)
- The physical properties of substances
- The concentration of a substance in a solution
- The reactivity of substances with one another
Which type of analysis specifically focuses on the percentage of a certain selected constituent in a sample?
Which type of analysis specifically focuses on the percentage of a certain selected constituent in a sample?
What is an 'analyte' in the context of analytical chemistry?
What is an 'analyte' in the context of analytical chemistry?
Which method of analysis involves the formation of a precipitate for measuring mass?
Which method of analysis involves the formation of a precipitate for measuring mass?
What type of analysis relates to the size of the sample available for analysis?
What type of analysis relates to the size of the sample available for analysis?
In the context of analytical chemistry, which analysis is NOT concerned with the chemical composition of a sample?
In the context of analytical chemistry, which analysis is NOT concerned with the chemical composition of a sample?
Flashcards
Analytical Chemistry
Analytical Chemistry
Branch of chemistry focused on separation, identification, and quantification of components in a sample.
Qualitative Analysis
Qualitative Analysis
Identifies what substances are present in a sample.
Quantitative Analysis
Quantitative Analysis
Determines how much of a substance is present in a sample.
Analyte
Analyte
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Complete Analysis
Complete Analysis
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Ultimate Analysis
Ultimate Analysis
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Proximate Analysis
Proximate Analysis
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Gravimetric Method
Gravimetric Method
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Study Notes
Course Information
- Course Title: Analytical Chemistry
- Instructor: Mr. Jerome R. Delos Santos
- Date: January 22, 2025
- Time: 8:00 PM - 5:00 PM
- Location: Valenzuela College of Education - Science Department
Objectives
- Understand the fundamental concepts of analytical chemistry
- Differentiate between qualitative and quantitative analysis
- Understand the role and importance of analytical chemistry in various aspects of life
- Exhibit familiarity with common laboratory apparatuses and equipment
- Identify instruments and glassware for accurate readings
Analytical Chemistry
- The branch of chemistry focused on the separation, identification, and quantification of chemical components in a sample.
Types of Analysis
- Qualitative Analysis:
- Identifies the substances present in a sample.
- Determines what constituents are in the sample.
- Quantitative Analysis:
- Determines the amount of each substance in a sample.
- Determines how much of a substance is present.
Classification of Analysis: Based on the Extent
- Complete/Exact Analysis: Determines the amount of each constituent quantitatively (e.g., Blood analysis).
- Ultimate Analysis: Determines the amount of each element (e.g., Gasoline).
- Proximate/Partial Analysis: Determines a certain selected amount of a constituent in a sample (e.g., Aspirin tablet - % salicylic acid).
Classification of Analysis: Based on the Size of Sample
- Macro Analysis: Samples greater than 100 mg
- Semimicro Analysis: Samples 10-100 mg
- Micro Analysis: Samples 1-10 mg
- Ultramicro Analysis: Samples less than 1 mg
Classification of Analysis: Based on Analyte Amount
- Major Constituent: Greater than 1%
- Minor Constituent: 0.01-1%
- Trace Constituent: 0.001-0.01%
- Ultratrace Constituent: Less than 0.001%
Classification of Analysis: Based on Method
- Classical Analysis (Gravimetric):
- Measures the mass of a substance in the sample.
- Forms a precipitate with the analyte then filters, dries and weighs.
- Example: Monitoring lead levels in drinking water.
- Classical Analysis (Volumetric):
- Measures the volume of a reagent required to react completely with the analyte.
- Example: Acid-base titration to determine the concentration of an acid or base.
- Instrumental Analysis (Electroanalytical):
- Measures current or voltage associated with chemical reactions at electrodes.
- Instrumental Analysis (Spectroscopic):
- Measures the interaction between matter and electromagnetic radiation.
- Instrumental Analysis (Chromatographic):
- Separates, identifies, and quantifies the components of a mixture.
- Distributes components based on differences between two phases.
Laboratory Glassware
- Descriptions of various lab glassware are pictured.
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